Ayuda: Problema con navegacion de server Server squid [SOLUCIONADO]

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Unix_Sendin
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Registrado: Dom Mar 04, 2007 8:00 am

Ayuda: Problema con navegacion de server Server squid [SOLUCIONADO]

Mensaje por Unix_Sendin » Lun Dic 12, 2011 3:10 am

El problema es el siguiente tengo configurado asi el config no entiendo pues las pagina se demora en abrir cuando abro muchas me da ping time out:
# WELCOME TO SQUID 2.7.STABLE3

cache_peer 192.168.1.1 parent 8080 0 proxy-only no-query no-digest login=user:passwd

#Recommended minimum configuration:
acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
#
# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src 172.10.1.0/24
#
acl SSL_ports port 443 # https
acl SSL_ports port 563 # snews
acl SSL_ports port 873 # rsync
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Safe_ports port 631 # cups
acl Safe_ports port 873 # rsync
acl Safe_ports port 901 # SWAT
acl purge method PURGE
acl CONNECT method CONNECT

# TAG: http_access
# Allowing or Denying access based on defined access lists
#
# Access to the HTTP port:
# http_access allow|deny [!]aclname ...
#
# NOTE on default values:
#
# If there are no "access" lines present, the default is to deny
# the request.
#
# If none of the "access" lines cause a match, the default is the
# opposite of the last line in the list. If the last line was
# deny, the default is allow. Conversely, if the last line
# is allow, the default will be deny. For these reasons, it is a
# good idea to have an "deny all" or "allow all" entry at the end
# of your access lists to avoid potential confusion.
#
#Default:
# http_access deny all
#
#Recommended minimum configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
# Only allow purge requests from localhost
http_access allow purge localhost
http_access deny purge
# Deny requests to unknown ports
http_access deny !Safe_ports
# Deny CONNECT to other than SSL ports
http_access deny CONNECT !SSL_ports
#
# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all


# TAG: icp_access
# Allowing or Denying access to the ICP port based on defined
# access lists
#
# icp_access allow|deny [!]aclname ...
#
# See http_access for details
#
#Default:
# icp_access deny all
#
#Allow ICP queries from local networks only
icp_access allow localnet
icp_access deny all


# NETWORK OPTIONS
# -----------------------------------------------------------------------------

# TAG: http_port
# Usage: port [options]
# hostname:port [options]
# 1.2.3.4:port [options]
#
# The socket addresses where Squid will listen for HTTP client
# requests. You may specify multiple socket addresses.
# There are three forms: port alone, hostname with port, and
# IP address with port. If you specify a hostname or IP
# address, Squid binds the socket to that specific
# address. This replaces the old 'tcp_incoming_address'
# option. Most likely, you do not need to bind to a specific
# address, so you can use the port number alone.
#
# If you are running Squid in accelerator mode, you
# probably want to listen on port 80 also, or instead.
#
# The -I command line option will override the *first* port
# specified here.
#
# You may specify multiple socket addresses on multiple lines.
#
# Options:
#
# transparent Support for transparent interception of
# outgoing requests without browser settings.
#
# tproxy Support Linux TPROXY for spoofing outgoing
# connections using the client IP address.
#
# accel Accelerator mode. See also the related vhost,
# vport and defaultsite directives.
#
# defaultsite=domainname
# What to use for the Host: header if it is not present
# in a request. Determines what site (not origin server)
# accelerators should consider the default.
# Defaults to visible_hostname:port if not set
# May be combined with vport=NN to override the port number.
# Implies accel.
#
# vhost Accelerator mode using Host header for virtual
# domain support. Implies accel.
#
# vport Accelerator with IP based virtual host support.
# Implies accel.
#
# vport=NN As above, but uses specified port number rather
# than the http_port number. Implies accel.
#
# allow-direct Allow direct forwarding in accelerator mode. Normally
# accelerated requests is denied direct forwarding as it
# never_direct was used.
#
# urlgroup= Default urlgroup to mark requests with (see
# also acl urlgroup and url_rewrite_program)
#
# protocol= Protocol to reconstruct accelerated requests with.
# Defaults to http.
#
# no-connection-auth
# Prevent forwarding of Microsoft connection oriented
# authentication (NTLM, Negotiate and Kerberos)
#
# act-as-origin
# Act is if this Squid is the origin server.
# This currently means generate own Date: and
# Expires: headers. Implies accel.
#
# http11 Enables HTTP/1.1 support to clients. The HTTP/1.1
# support is still incomplete with an internal HTTP/1.0
# hop, but should work with most clients. The main
# HTTP/1.1 features missing due to this is forwarding
# of requests using chunked transfer encoding (results
# in 411) and forwarding of 1xx responses (silently
# dropped)
#
# name= Specifies a internal name for the port. Defaults to
# the port specification (port or addr:port)
#
# keepalive[=idle,interval,timeout]
# Enable TCP keepalive probes of idle connections
# idle is the initial time before TCP starts probing
# the connection, interval how often to probe, and
# timeout the time before giving up.
#
# If you run Squid on a dual-homed machine with an internal
# and an external interface we recommend you to specify the
# internal address:port in http_port. This way Squid will only be
# visible on the internal address.
#
# Squid normally listens to port 3128
http_port 3128

# TAG: cache_peer_domain
# Use to limit the domains for which a neighbor cache will be
# queried. Usage:
#
# cache_peer_domain cache-host domain [domain ...]
# cache_peer_domain cache-host !domain
#
# For example, specifying
#
# cache_peer_domain parent.foo.net .edu
#
# has the effect such that UDP query packets are sent to
# 'bigserver' only when the requested object exists on a
# server in the .edu domain. Prefixing the domain name
# with '!' means the cache will be queried for objects
# NOT in that domain.
#
# NOTE: * Any number of domains may be given for a cache-host,
# either on the same or separate lines.
# * When multiple domains are given for a particular
# cache-host, the first matched domain is applied.
# * Cache hosts with no domain restrictions are queried
# for all requests.
# * There are no defaults.
# * There is also a 'cache_peer_access' tag in the ACL
# section.
#
#Default:
# none

# TAG: cache_peer_access
# Similar to 'cache_peer_domain' but provides more flexibility by
# using ACL elements.
#
# cache_peer_access cache-host allow|deny [!]aclname ...
#
# The syntax is identical to 'http_access' and the other lists of
# ACL elements. See the comments for 'http_access' below, or
# the Squid FAQ (http://www.squid-cache.org/FAQ/FAQ-10.html).
#
#Default:
# none

# TAG: neighbor_type_domain
# usage: neighbor_type_domain neighbor parent|sibling domain domain ...
#
# Modifying the neighbor type for specific domains is now
# possible. You can treat some domains differently than the the
# default neighbor type specified on the 'cache_peer' line.
# Normally it should only be necessary to list domains which
# should be treated differently because the default neighbor type
# applies for hostnames which do not match domains listed here.
#
#EXAMPLE:
# cache_peer cache.foo.org parent 3128 3130
# neighbor_type_domain cache.foo.org sibling .com .net
# neighbor_type_domain cache.foo.org sibling .au .de
#
#Default:
# none

# TAG: dead_peer_timeout (seconds)
# This controls how long Squid waits to declare a peer cache
# as "dead." If there are no ICP replies received in this
# amount of time, Squid will declare the peer dead and not
# expect to receive any further ICP replies. However, it
# continues to send ICP queries, and will mark the peer as
# alive upon receipt of the first subsequent ICP reply.
#
# This timeout also affects when Squid expects to receive ICP
# replies from peers. If more than 'dead_peer' seconds have
# passed since the last ICP reply was received, Squid will not
# expect to receive an ICP reply on the next query. Thus, if
# your time between requests is greater than this timeout, you
# will see a lot of requests sent DIRECT to origin servers
# instead of to your parents.
#
#Default:
# dead_peer_timeout 10 seconds

# TAG: hierarchy_stoplist
# A list of words which, if found in a URL, cause the object to
# be handled directly by this cache. In other words, use this
# to not query neighbor caches for certain objects. You may
# list this option multiple times. Note: never_direct overrides
# this option.
#We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?


# MEMORY CACHE OPTIONS
# -----------------------------------------------------------------------------

# TAG: cache_mem (bytes)
# NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS SIZE.
# IT ONLY PLACES A LIMIT ON HOW MUCH ADDITIONAL MEMORY SQUID WILL
# USE AS A MEMORY CACHE OF OBJECTS. SQUID USES MEMORY FOR OTHER
# THINGS AS WELL. SEE THE SQUID FAQ SECTION 8 FOR DETAILS.
#
# 'cache_mem' specifies the ideal amount of memory to be used
# for:
# * In-Transit objects
# * Hot Objects
# * Negative-Cached objects
#
# Data for these objects are stored in 4 KB blocks. This
# parameter specifies the ideal upper limit on the total size of
# 4 KB blocks allocated. In-Transit objects take the highest
# priority.
#
# In-transit objects have priority over the others. When
# additional space is needed for incoming data, negative-cached
# and hot objects will be released. In other words, the
# negative-cached and hot objects will fill up any unused space
# not needed for in-transit objects.
#
# If circumstances require, this limit will be exceeded.
# Specifically, if your incoming request rate requires more than
# 'cache_mem' of memory to hold in-transit objects, Squid will
# exceed this limit to satisfy the new requests. When the load
# decreases, blocks will be freed until the high-water mark is
# reached. Thereafter, blocks will be used to store hot
# objects.
#
#Default:
cache_mem 192 MB

# TAG: maximum_object_size_in_memory (bytes)
# Objects greater than this size will not be attempted to kept in
# the memory cache. This should be set high enough to keep objects
# accessed frequently in memory to improve performance whilst low
# enough to keep larger objects from hoarding cache_mem.
#
#Default:
# maximum_object_size_in_memory 8 KB

# TAG: memory_replacement_policy
# The memory replacement policy parameter determines which
# objects are purged from memory when memory space is needed.
#
# See cache_replacement_policy for details.
#
#Default:
# memory_replacement_policy lru


# DISK CACHE OPTIONS
# -----------------------------------------------------------------------------

# TAG: cache_replacement_policy
# The cache replacement policy parameter determines which
# objects are evicted (replaced) when disk space is needed.
#
# lru : Squid's original list based LRU policy
# heap GDSF : Greedy-Dual Size Frequency
# heap LFUDA: Least Frequently Used with Dynamic Aging
# heap LRU : LRU policy implemented using a heap
#
# Applies to any cache_dir lines listed below this.
#
# The LRU policies keeps recently referenced objects.
#
# The heap GDSF policy optimizes object hit rate by keeping smaller
# popular objects in cache so it has a better chance of getting a
# hit. It achieves a lower byte hit rate than LFUDA though since
# it evicts larger (possibly popular) objects.
#
# The heap LFUDA policy keeps popular objects in cache regardless of
# their size and thus optimizes byte hit rate at the expense of
# hit rate since one large, popular object will prevent many
# smaller, slightly less popular objects from being cached.
#
# Both policies utilize a dynamic aging mechanism that prevents
# cache pollution that can otherwise occur with frequency-based
# replacement policies.
#
# NOTE: if using the LFUDA replacement policy you should increase
# the value of maximum_object_size above its default of 4096 KB to
# to maximize the potential byte hit rate improvement of LFUDA.
#
# For more information about the GDSF and LFUDA cache replacement
# policies see http://www.hpl.hp.com/techreports/1999/HPL-1999-69.html
# and http://fog.hpl.external.hp.com/techrepo ... 8-173.html.
#
#Default:
# cache_replacement_policy lru

# TAG: cache_dir
# Usage:
#
# cache_dir Type Directory-Name Fs-specific-data [options]
#
# You can specify multiple cache_dir lines to spread the
# cache among different disk partitions.
#
# Type specifies the kind of storage system to use. Only "ufs"
# is built by default. To enable any of the other storage systems
# see the --enable-storeio configure option.
#
# 'Directory' is a top-level directory where cache swap
# files will be stored. If you want to use an entire disk
# for caching, this can be the mount-point directory.
# The directory must exist and be writable by the Squid
# process. Squid will NOT create this directory for you.
# Only using COSS, a raw disk device or a stripe file can
# be specified, but the configuration of the "cache_swap_log"
# tag is mandatory.
#
# The ufs store type:
#
# "ufs" is the old well-known Squid storage format that has always
# been there.
#
# cache_dir ufs Directory-Name Mbytes L1 L2 [options]
#
# 'Mbytes' is the amount of disk space (MB) to use under this
# directory. The default is 100 MB. Change this to suit your
# configuration. Do NOT put the size of your disk drive here.
# Instead, if you want Squid to use the entire disk drive,
# subtract 20% and use that value.
#
# 'Level-1' is the number of first-level subdirectories which
# will be created under the 'Directory'. The default is 16.
#
# 'Level-2' is the number of second-level subdirectories which
# will be created under each first-level directory. The default
# is 256.
#
# The aufs store type:
#
# "aufs" uses the same storage format as "ufs", utilizing
# POSIX-threads to avoid blocking the main Squid process on
# disk-I/O. This was formerly known in Squid as async-io.
#
# cache_dir aufs Directory-Name Mbytes L1 L2 [options]
#
# see argument descriptions under ufs above
#
# The diskd store type:
#
# "diskd" uses the same storage format as "ufs", utilizing a
# separate process to avoid blocking the main Squid process on
# disk-I/O.
#
# cache_dir diskd Directory-Name Mbytes L1 L2 [options] [Q1=n] [Q2=n]
#
# see argument descriptions under ufs above
#
# Q1 specifies the number of unacknowledged I/O requests when Squid
# stops opening new files. If this many messages are in the queues,
# Squid won't open new files. Default is 64
#
# Q2 specifies the number of unacknowledged messages when Squid
# starts blocking. If this many messages are in the queues,
# Squid blocks until it receives some replies. Default is 72
#
# When Q1 < Q2 (the default), the cache directory is optimized
# for lower response time at the expense of a decrease in hit
# ratio. If Q1 > Q2, the cache directory is optimized for
# higher hit ratio at the expense of an increase in response
# time.
#
# The coss store type:
#
# block-size=n defines the "block size" for COSS cache_dir's.
# Squid uses file numbers as block numbers. Since file numbers
# are limited to 24 bits, the block size determines the maximum
# size of the COSS partition. The default is 512 bytes, which
# leads to a maximum cache_dir size of 512<<24, or 8 GB. Note
# you should not change the COSS block size after Squid
# has written some objects to the cache_dir.
#
# overwrite-percent=n defines the percentage of disk that COSS
# must write to before a given object will be moved to the
# current stripe. A value of "n" closer to 100 will cause COSS
# to waste less disk space by having multiple copies of an object
# on disk, but will increase the chances of overwriting a popular
# object as COSS overwrites stripes. A value of "n" close to 0
# will cause COSS to keep all current objects in the current COSS
# stripe at the expense of the hit rate. The default value of 50
# will allow any given object to be stored on disk a maximum of
# 2 times.
#
# max-stripe-waste=n defines the maximum amount of space that COSS
# will waste in a given stripe (in bytes). When COSS writes data
# to disk, it will potentially waste up to "max-size" worth of disk
# space for each 1MB of data written. If "max-size" is set to a
# large value (ie >256k), this could potentially result in large
# amounts of wasted disk space. Setting this value to a lower value
# (ie 64k or 32k) will result in a COSS disk refusing to cache
# larger objects until the COSS stripe has been filled to within
# "max-stripe-waste" of the maximum size (1MB).
#
# membufs=n defines the number of "memory-only" stripes that COSS
# will use. When an cache hit is performed on a COSS stripe before
# COSS has reached the overwrite-percent value for that object,
# COSS will use a series of memory buffers to hold the object in
# while the data is sent to the client. This will define the maximum
# number of memory-only buffers that COSS will use. The default value
# is 10, which will use a maximum of 10MB of memory for buffers.
#
# maxfullbufs=n defines the maximum number of stripes a COSS partition
# will have in memory waiting to be freed (either because the disk is
# under load and the stripe is unwritten, or because clients are still
# transferring data from objects using the memory). In order to try
# and maintain a good hit rate under load, COSS will reserve the last
# 2 full stripes for object hits. (ie a COSS cache_dir will reject
# new objects when the number of full stripes is 2 less than maxfullbufs)
#
# The null store type:
#
# no options are allowed or required
#
# Common options:
#
# no-store, no new objects should be stored to this cache_dir
#
# min-size=n, refers to the min object size this storedir will accept.
# It's used to restrict a storedir to only store large objects
# (e.g. aufs) while other storedirs are optimized for smaller objects
# (e.g. COSS). Defaults to 0.
#
# max-size=n, refers to the max object size this storedir supports.
# It is used to initially choose the storedir to dump the object.
# Note: To make optimal use of the max-size limits you should order
# the cache_dir lines with the smallest max-size value first and the
# ones with no max-size specification last.
#
# Note that for coss, max-size must be less than COSS_MEMBUF_SZ
# (hard coded at 1 MB).
#
#Default:
cache_dir ufs /var/spool/squid 2000 16 256

# TAG: store_dir_select_algorithm
# Set this to 'round-robin' as an alternative.
#
#Default:
# store_dir_select_algorithm least-load

# TAG: max_open_disk_fds
# To avoid having disk as the I/O bottleneck Squid can optionally
# bypass the on-disk cache if more than this amount of disk file
# descriptors are open.
#
# A value of 0 indicates no limit.
#
#Default:
# max_open_disk_fds 0

# TAG: minimum_object_size (bytes)
# Objects smaller than this size will NOT be saved on disk. The
# value is specified in kilobytes, and the default is 0 KB, which
# means there is no minimum.
#
#Default:
# minimum_object_size 0 KB

# TAG: maximum_object_size (bytes)
# Objects larger than this size will NOT be saved on disk. The
# value is specified in kilobytes, and the default is 4MB. If
# you wish to get a high BYTES hit ratio, you should probably
# increase this (one 32 MB object hit counts for 3200 10KB
# hits). If you wish to increase speed more than your want to
# save bandwidth you should leave this low.
#
# NOTE: if using the LFUDA replacement policy you should increase
# this value to maximize the byte hit rate improvement of LFUDA!
# See replacement_policy below for a discussion of this policy.
#
# NOTE 2: In Debian the default is raised to 20MB allowing cache
# of Packages files in debian repositories. This makes squid a
# proper proxy for APT.
#
#Default:
# maximum_object_size 20480 KB

# TAG: cache_swap_low (percent, 0-100)
# TAG: cache_swap_high (percent, 0-100)
#
# The low- and high-water marks for cache object replacement.
# Replacement begins when the swap (disk) usage is above the
# low-water mark and attempts to maintain utilization near the
# low-water mark. As swap utilization gets close to high-water
# mark object eviction becomes more aggressive. If utilization is
# close to the low-water mark less replacement is done each time.
#
# Defaults are 90% and 95%. If you have a large cache, 5% could be
# hundreds of MB. If this is the case you may wish to set these
# numbers closer together.
#
#Default:
cache_swap_low 90
cache_swap_high 95

# TAG: update_headers on|off
# By default Squid updates stored HTTP headers when receiving
# a 304 response. Set this to off if you want to disable this
# for disk I/O performance reasons. Disabling this VIOLATES the
# HTTP standard, and could make you liable for problems which it
# causes.
#
#Default:
# update_headers on


# LOGFILE OPTIONS
# -----------------------------------------------------------------------------

# TAG: logformat
# Usage:
#
# logformat <name> <format specification>
#
# Defines an access log format.
#
# The <format specification> is a string with embedded % format codes
#
# % format codes all follow the same basic structure where all but
# the formatcode is optional. Output strings are automatically escaped
# as required according to their context and the output format
# modifiers are usually not needed, but can be specified if an explicit
# output format is desired.
#
# % ["|[|'|#] [-] [[0]width] [{argument}] formatcode
#
# " output in quoted string format
# [ output in squid text log format as used by log_mime_hdrs
# # output in URL quoted format
# ' output as-is
#
# - left aligned
# width field width. If starting with 0 the
# output is zero padded
# {arg} argument such as header name etc
#
# Format codes:
#
# >a Client source IP address
# >A Client FQDN
# >p Client source port
# <A Server IP address or peer name
# la Local IP address (http_port)
# lp Local port number (http_port)
# oa Our outgoing IP address (tcp_outgoing_address)
# ts Seconds since epoch
# tu subsecond time (milliseconds)
# tl Local time. Optional strftime format argument
# default %d/%b/%Y:%H:%M:%S %z
# tg GMT time. Optional strftime format argument
# default %d/%b/%Y:%H:%M:%S %z
# tr Response time (milliseconds)
# >h Request header. Optional header name argument
# on the format header[:[separator]element]
# <h Reply header. Optional header name argument
# as for >h
# un User name
# ul User name from authentication
# ui User name from ident
# us User name from SSL
# ue User name from external acl helper
# Hs HTTP status code
# Ss Squid request status (TCP_MISS etc)
# Sh Squid hierarchy status (DEFAULT_PARENT etc)
# mt MIME content type
# rm Request method (GET/POST etc)
# ru Request URL
# rp Request URL-Path excluding hostname
# rv Request protocol version
# ea Log string returned by external acl
# <st Reply size including HTTP headers
# >st Request size including HTTP headers
# st Request+Reply size including HTTP headers
# sn Unique sequence number per log line entry
# % a literal % character
#
# The default formats available (which do not need re-defining) are:
#
#logformat squid %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt
#logformat squidmime %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt [%>h] [%<h]
#logformat common %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st %Ss:%Sh
#logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
#
#Default:
# none

# TAG: access_log
# These files log client request activities. Has a line every HTTP or
# ICP request. The format is:
# access_log <filepath> [<logformat name> [acl acl ...]]
# access_log none [acl acl ...]]
#
# Will log to the specified file using the specified format (which
# must be defined in a logformat directive) those entries which match
# ALL the acl's specified (which must be defined in acl clauses).
# If no acl is specified, all requests will be logged to this file.
#
# To disable logging of a request use the filepath "none", in which case
# a logformat name should not be specified.
#
# To log the request via syslog specify a filepath of "syslog":
#
# access_log syslog[:facility.priority] [format [acl1 [acl2 ....]]]
# where facility could be any of:
# authpriv, daemon, local0 .. local7 or user.
#
# And priority could be any of:
# err, warning, notice, info, debug.
access_log /var/log/squid/access.log squid

# TAG: log_access allow|deny acl acl...
# This options allows you to control which requests gets logged
# to access.log (see access_log directive). Requests denied for
# logging will also not be accounted for in performance counters.
#
#Default:
# none

# TAG: logfile_daemon
# Specify the path to the logfile-writing daemon. This daemon is
# used to write the access and store logs, if configured.
#
#Default:
# logfile_daemon /usr/lib/squid/logfile-daemon

# TAG: cache_log
# Cache logging file. This is where general information about
# your cache's behavior goes. You can increase the amount of data
# logged to this file with the "debug_options" tag below.
#
#Default:
cache_log /var/log/squid/cache.log

# TAG: cache_store_log
# Logs the activities of the storage manager. Shows which
# objects are ejected from the cache, and which objects are
# saved and for how long. To disable, enter "none". There are
# not really utilities to analyze this data, so you can safely
# disable it.
#
#Default:
cache_store_log /var/log/squid/store.log

# TAG: cache_swap_state
# Location for the cache "swap.state" file. This index file holds
# the metadata of objects saved on disk. It is used to rebuild
# the cache during startup. Normally this file resides in each
# 'cache_dir' directory, but you may specify an alternate
# pathname here. Note you must give a full filename, not just
# a directory. Since this is the index for the whole object
# list you CANNOT periodically rotate it!
#
# If %s can be used in the file name it will be replaced with a
# a representation of the cache_dir name where each / is replaced
# with '.'. This is needed to allow adding/removing cache_dir
# lines when cache_swap_log is being used.
#
# If have more than one 'cache_dir', and %s is not used in the name
# these swap logs will have names such as:
#
# cache_swap_log.00
# cache_swap_log.01
# cache_swap_log.02
#
# The numbered extension (which is added automatically)
# corresponds to the order of the 'cache_dir' lines in this
# configuration file. If you change the order of the 'cache_dir'
# lines in this file, these index files will NOT correspond to
# the correct 'cache_dir' entry (unless you manually rename
# them). We recommend you do NOT use this option. It is
# better to keep these index files in each 'cache_dir' directory.
#
#Default:
# none

# TAG: logfile_rotate
# Specifies the number of logfile rotations to make when you
# type 'squid -k rotate'. The default is 10, which will rotate
# with extensions 0 through 9. Setting logfile_rotate to 0 will
# disable the file name rotation, but the logfiles are still closed
# and re-opened. This will enable you to rename the logfiles
# yourself just before sending the rotate signal.
#
# Note, the 'squid -k rotate' command normally sends a USR1
# signal to the running squid process. In certain situations
# (e.g. on Linux with Async I/O), USR1 is used for other
# purposes, so -k rotate uses another signal. It is best to get
# in the habit of using 'squid -k rotate' instead of 'kill -USR1
# <pid>'.
#
# Note2, for Debian/Linux the default of logfile_rotate is
# zero, since it includes external logfile-rotation methods.
#
#Default:
# logfile_rotate 0

# TAG: emulate_httpd_log on|off
# The Cache can emulate the log file format which many 'httpd'
# programs use. To disable/enable this emulation, set
# emulate_httpd_log to 'off' or 'on'. The default
# is to use the native log format since it includes useful
# information Squid-specific log analyzers use.
#
#Default:
# emulate_httpd_log off

# TAG: log_ip_on_direct on|off
# Log the destination IP address in the hierarchy log tag when going
# direct. Earlier Squid versions logged the hostname here. If you
# prefer the old way set this to off.
#
#Default:
# log_ip_on_direct on

# TAG: mime_table
# Pathname to Squid's MIME table. You shouldn't need to change
# this, but the default file contains examples and formatting
# information if you do.
#
#Default:
# mime_table /usr/share/squid/mime.conf

# TAG: log_mime_hdrs on|off
# The Cache can record both the request and the response MIME
# headers for each HTTP transaction. The headers are encoded
# safely and will appear as two bracketed fields at the end of
# the access log (for either the native or httpd-emulated log
# formats). To enable this logging set log_mime_hdrs to 'on'.
#
#Default:
# log_mime_hdrs off

# TAG: useragent_log
# Squid will write the User-Agent field from HTTP requests
# to the filename specified here. By default useragent_log
# is disabled.
#
#Default:
# none

# TAG: referer_log
# Squid will write the Referer field from HTTP requests to the
# filename specified here. By default referer_log is disabled.
# Note that "referer" is actually a misspelling of "referrer"
# however the misspelt version has been accepted into the HTTP RFCs
# and we accept both.
#
#Default:
# none

# TAG: pid_filename
# A filename to write the process-id to. To disable, enter "none".
#
#Default:
# pid_filename /var/run/squid.pid

# TAG: debug_options
# Logging options are set as section,level where each source file
# is assigned a unique section. Lower levels result in less
# output, Full debugging (level 9) can result in a very large
# log file, so be careful. The magic word "ALL" sets debugging
# levels for all sections. We recommend normally running with
# "ALL,1".
#
#Default:
# debug_options ALL,1

# TAG: log_fqdn on|off
# Turn this on if you wish to log fully qualified domain names
# in the access.log. To do this Squid does a DNS lookup of all
# IP's connecting to it. This can (in some situations) increase
# latency, which makes your cache seem slower for interactive
# browsing.
#
#Default:
# log_fqdn off

# TAG: client_netmask
# A netmask for client addresses in logfiles and cachemgr output.
# Change this to protect the privacy of your cache clients.
# A netmask of 255.255.255.0 will log all IP's in that range with
# the last digit set to '0'.
#
#Default:
# client_netmask 255.255.255.255

# TAG: forward_log
# Note: This option is only available if Squid is rebuilt with the
# --enable-forward-log option
#
# Logs the server-side requests.
#
# This is currently work in progress.
#
#Default:
# none

# TAG: strip_query_terms
# By default, Squid strips query terms from requested URLs before
# logging. This protects your user's privacy.
#
#Default:
# strip_query_terms on

# TAG: buffered_logs on|off
# cache.log log file is written with stdio functions, and as such
# it can be buffered or unbuffered. By default it will be unbuffered.
# Buffering it can speed up the writing slightly (though you are
# unlikely to need to worry unless you run with tons of debugging
# enabled in which case performance will suffer badly anyway..).
#
#Default:
# buffered_logs off

# TAG: netdb_filename
# A filename where Squid stores it's netdb state between restarts.
# To disable, enter "none".
#
#Default:
# netdb_filename /var/spool/squid/logs/netdb.state


# OPTIONS FOR FTP GATEWAYING
# -----------------------------------------------------------------------------

# TAG: ftp_user
# If you want the anonymous login password to be more informative
# (and enable the use of picky ftp servers), set this to something
# reasonable for your domain, like wwwuser@somewhere.net
#
# The reason why this is domainless by default is the
# request can be made on the behalf of a user in any domain,
# depending on how the cache is used.
# Some ftp server also validate the email address is valid
# (for example perl.com).
#
#Default:
# ftp_user Squid@

# TAG: ftp_list_width
# Sets the width of ftp listings. This should be set to fit in
# the width of a standard browser. Setting this too small
# can cut off long filenames when browsing ftp sites.
#
#Default:
# ftp_list_width 32

# TAG: ftp_passive
# If your firewall does not allow Squid to use passive
# connections, turn off this option.
#
#Default:
# ftp_passive on

# TAG: ftp_sanitycheck
# For security and data integrity reasons Squid by default performs
# sanity checks of the addresses of FTP data connections ensure the
# data connection is to the requested server. If you need to allow
# FTP connections to servers using another IP address for the data
# connection turn this off.
#
#Default:
# ftp_sanitycheck on

# TAG: ftp_telnet_protocol
# The FTP protocol is officially defined to use the telnet protocol
# as transport channel for the control connection. However, many
# implementations are broken and does not respect this aspect of
# the FTP protocol.
#
# If you have trouble accessing files with ASCII code 255 in the
# path or similar problems involving this ASCII code you can
# try setting this directive to off. If that helps, report to the
# operator of the FTP server in question that their FTP server
# is broken and does not follow the FTP standard.
#
#Default:
# ftp_telnet_protocol on


# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
# -----------------------------------------------------------------------------

# TAG: diskd_program
# Specify the location of the diskd executable.
# Note this is only useful if you have compiled in
# diskd as one of the store io modules.
#
#Default:
# diskd_program /usr/lib/squid/diskd-daemon

# TAG: unlinkd_program
# Specify the location of the executable for file deletion process.
#
#Default:
# unlinkd_program /usr/lib/squid/unlinkd

# TAG: pinger_program
# Note: This option is only available if Squid is rebuilt with the
# --enable-icmp option
#
# Specify the location of the executable for the pinger process.
#
#Default:
# pinger_program /usr/lib/squid/pinger


# OPTIONS FOR URL REWRITING
# -----------------------------------------------------------------------------

# TAG: storeurl_rewrite_program
# Specify the location of the executable for the Store URL rewriter.
# The Store URL rewriter allows URLs to be "normalised" ; mapping
# multiple URLs to a single URL representation for cache operations.
#
# For example, if you request an object at:
#
# http://srv1.example.com/image.gif
#
# and a subsequent request for:
#
# http://srv2.example.com/image.gif
#
# then Squid will treat these both as different URLs and cache them
# seperately.
#
# This is almost the normal case, but an increasing number of sites
# distribute the same content between multiple frontend hosts.
# The Store URL rewriter allows you to rewrite these URLs to one URL
# to use for cache operations, but not -fetches-. Fetches are still
# made from the original site, but stored with the store URL rewritten
# URL as the store key.
#
# For each requested URL rewriter will receive on line with the format
#
# URL <SP> client_ip "/" fqdn <SP> user <SP> method <SP> urlgroup
# [<SP> kvpairs] <NL>
#
# In the future, the rewriter interface will be extended with
# key=value pairs ("kvpairs" shown above). Rewriter programs
# should be prepared to receive and possibly ignore additional
# whitespace-separated tokens on each input line.
#
# And the rewriter may return a rewritten URL. The other components of
# the request line does not need to be returned (ignored if they are).
#
# By default, a Store URL rewriter is not used.
#
# Please note - the normal URL rewriter rewrites Squid's _destination_
# URL - ie, what it fetches. The Store URL rewriter rewrites Squid's
# _store_ URL - ie, what it uses to store and retrieve objects.
#
#Default:
# none

# TAG: storeurl_rewrite_children
#
#
#Default:
# storeurl_rewrite_children 5

# TAG: storeurl_rewrite_concurrency
#
#
#Default:
# storeurl_rewrite_concurrency 0

# TAG: url_rewrite_program
# Specify the location of the executable for the URL rewriter.
# Since they can perform almost any function there isn't one included.
#
# For each requested URL rewriter will receive on line with the format
#
# URL <SP> client_ip "/" fqdn <SP> user <SP> method <SP> urlgroup
# [<SP> kvpairs] <NL>
#
# In the future, the rewriter interface will be extended with
# key=value pairs ("kvpairs" shown above). Rewriter programs
# should be prepared to receive and possibly ignore additional
# whitespace-separated tokens on each input line.
#
# And the rewriter may return a rewritten URL. The other components of
# the request line does not need to be returned (ignored if they are).
#
# The rewriter can also indicate that a client-side redirect should
# be performed to the new URL. This is done by prefixing the returned
# URL with "301:" (moved permanently) or 302: (moved temporarily).
#
# It can also return a "urlgroup" that can subsequently be matched
# in cache_peer_access and similar ACL driven rules. An urlgroup is
# returned by prefixing the returned URL with "!urlgroup!".
#
# By default, a URL rewriter is not used.
#
#Default:
# none

# TAG: url_rewrite_children
# The number of redirector processes to spawn. If you start
# too few Squid will have to wait for them to process a backlog of
# URLs, slowing it down. If you start too many they will use RAM
# and other system resources.
#
#Default:
# url_rewrite_children 5

# TAG: url_rewrite_concurrency
# The number of requests each redirector helper can handle in
# parallel. Defaults to 0 which indicates the redirector
# is a old-style single threaded redirector.
#
# When this directive is set to a value >= 1 then the protocol
# used to communicate with the helper is modified to include
# a request ID in front of the request/response. The request
# ID from the request must be echoed back with the response
# to that request.
#
#Default:
# url_rewrite_concurrency 0

# TAG: url_rewrite_host_header
# By default Squid rewrites any Host: header in redirected
# requests. If you are running an accelerator this may
# not be a wanted effect of a redirector.
#
# WARNING: Entries are cached on the result of the URL rewriting
# process, so be careful if you have domain-virtual hosts.
#
#Default:
# url_rewrite_host_header on

# TAG: url_rewrite_access
# If defined, this access list specifies which requests are
# sent to the redirector processes. By default all requests
# are sent.
#
#Default:
# none

# TAG: storeurl_access
#
#
#Default:
# none

# TAG: redirector_bypass
# When this is 'on', a request will not go through the
# redirector if all redirectors are busy. If this is 'off'
# and the redirector queue grows too large, Squid will exit
# with a FATAL error and ask you to increase the number of
# redirectors. You should only enable this if the redirectors
# are not critical to your caching system. If you use
# redirectors for access control, and you enable this option,
# users may have access to pages they should not
# be allowed to request.
#
#Default:
# redirector_bypass off

# TAG: location_rewrite_program
# Specify the location of the executable for the Location rewriter,
# used to rewrite server generated redirects. Usually used in
# conjunction with a url_rewrite_program
#
# For each Location header received the location rewriter will receive
# one line with the format:
#
# location URL <SP> requested URL <SP> urlgroup <NL>
#
# And the rewriter may return a rewritten Location URL or a blank line.
# The other components of the request line does not need to be returned
# (ignored if they are).
#
# By default, a Location rewriter is not used.
#
#Default:
# none

# TAG: location_rewrite_children
# The number of location rewriting processes to spawn. If you start
# too few Squid will have to wait for them to process a backlog of
# URLs, slowing it down. If you start too many they will use RAM
# and other system resources.
#
#Default:
# location_rewrite_children 5

# TAG: location_rewrite_concurrency
# The number of requests each Location rewriter helper can handle in
# parallel. Defaults to 0 which indicates that the helper
# is a old-style singlethreaded helper.
#
#Default:
# location_rewrite_concurrency 0

# TAG: location_rewrite_access
# If defined, this access list specifies which requests are
# sent to the location rewriting processes. By default all Location
# headers are sent.
#
#Default:
# none


# OPTIONS FOR TUNING THE CACHE
# -----------------------------------------------------------------------------

# TAG: cache
# A list of ACL elements which, if matched, cause the request to
# not be satisfied from the cache and the reply to not be cached.
# In other words, use this to force certain objects to never be cached.
#
# You must use the word 'DENY' to indicate the ACL names which should
# NOT be cached.
#
# Default is to allow all to be cached.
#
#Default:
# none

# TAG: max_stale time-units
# This option puts an upper limit on how stale content Squid
# will serve from the cache if cache validation fails.
#
#Default:
# max_stale 1 week

# TAG: refresh_pattern
# usage: refresh_pattern [-i] regex min percent max [options]
#
# By default, regular expressions are CASE-SENSITIVE. To make
# them case-insensitive, use the -i option.
#
# 'Min' is the time (in minutes) an object without an explicit
# expiry time should be considered fresh. The recommended
# value is 0, any higher values may cause dynamic applications
# to be erroneously cached unless the application designer
# has taken the appropriate actions.
#
# 'Percent' is a percentage of the objects age (time since last
# modification age) an object without explicit expiry time
# will be considered fresh.
#
# 'Max' is an upper limit on how long objects without an explicit
# expiry time will be considered fresh.
#
# options: override-expire
# override-lastmod
# reload-into-ims
# ignore-reload
# ignore-no-cache
# ignore-private
# ignore-auth
# stale-while-revalidate=NN
# ignore-stale-while-revalidate
# max-stale=NN
# negative-ttl=NN
#
# override-expire enforces min age even if the server
# sent an explicit expiry time (e.g., with the
# Expires: header or Cache-Control: max-age). Doing this
# VIOLATES the HTTP standard. Enabling this feature
# could make you liable for problems which it causes.
#
# override-lastmod enforces min age even on objects
# that were modified recently.
#
# reload-into-ims changes client no-cache or ``reload''
# to If-Modified-Since requests. Doing this VIOLATES the
# HTTP standard. Enabling this feature could make you
# liable for problems which it causes.
#
# ignore-reload ignores a client no-cache or ``reload''
# header. Doing this VIOLATES the HTTP standard. Enabling
# this feature could make you liable for problems which
# it causes.
#
# ignore-no-cache ignores any ``Pragma: no-cache'' and
# ``Cache-control: no-cache'' headers received from a server.
# The HTTP RFC never allows the use of this (Pragma) header
# from a server, only a client, though plenty of servers
# send it anyway.
#
# ignore-private ignores any ``Cache-control: private''
# headers received from a server. Doing this VIOLATES
# the HTTP standard. Enabling this feature could make you
# liable for problems which it causes.
#
# ignore-auth caches responses to requests with authorization,
# as if the originserver had sent ``Cache-control: public''
# in the response header. Doing this VIOLATES the HTTP standard.
# Enabling this feature could make you liable for problems which
# it causes.
#
# stale-while-revalidate=NN makes Squid perform an asyncronous
# cache validation if the object isn't more stale than NN.
# Doing this VIOLATES the HTTP standard. Enabling this
# feature could make you liable for problems which it
# causes.
#
# ignore-stale-while-revalidate makes Squid ignore any 'Cache-Control:
# stale-while-revalidate=NN' headers received from a server. Can be
# combined with stale-while-revalidate=NN to override the server provided
# value.
#
# max-stale=NN provided a maximum staleness factor. Squid won't
# serve objects more stale than this even if it failed to
# validate the object.
#
# negative-ttl=NN overrides the global negative_ttl parameter
# selectively for URLs matching this pattern (in seconds).
#
# Basically a cached object is:
#
# FRESH if expires < now, else STALE
# STALE if age > max
# FRESH if lm-factor < percent, else STALE
# FRESH if age < min
# else STALE
#
# The refresh_pattern lines are checked in the order listed here.
# The first entry which matches is used. If none of the entries
# match the default will be used.
#
# Note, you must uncomment all the default lines if you want
# to change one. The default setting is only active if none is
# used.
#
#Suggested default:
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern (Release|Package(.gz)*)$ 0 20% 2880
refresh_pattern . 0 20% 4320

# TAG: quick_abort_min (KB)
# TAG: quick_abort_max (KB)
# TAG: quick_abort_pct (percent)
# The cache by default continues downloading aborted requests
# which are almost completed (less than 16 KB remaining). This
# may be undesirable on slow (e.g. SLIP) links and/or very busy
# caches. Impatient users may tie up file descriptors and
# bandwidth by repeatedly requesting and immediately aborting
# downloads.
#
# When the user aborts a request, Squid will check the
# quick_abort values to the amount of data transfered until
# then.
#
# If the transfer has less than 'quick_abort_min' KB remaining,
# it will finish the retrieval.
#
# If the transfer has more than 'quick_abort_max' KB remaining,
# it will abort the retrieval.
#
# If more than 'quick_abort_pct' of the transfer has completed,
# it will finish the retrieval.
#
# If you do not want any retrieval to continue after the client
# has aborted, set both 'quick_abort_min' and 'quick_abort_max'
# to '0 KB'.
#
# If you want retrievals to always continue if they are being
# cached set 'quick_abort_min' to '-1 KB'.
#
#Default:
# quick_abort_min 16 KB
# quick_abort_max 16 KB
# quick_abort_pct 95

# TAG: read_ahead_gap buffer-size
# The amount of data the cache will buffer ahead of what has been
# sent to the client when retrieving an object from another server.
#
#Default:
# read_ahead_gap 16 KB

# TAG: negative_ttl time-units
# Time-to-Live (TTL) for failed requests. Certain types of
# failures (such as "connection refused" and "404 Not Found") are
# negatively-cached for a configurable amount of time. The
# default is 5 minutes. Note that this is different from
# negative caching of DNS lookups.
#
#Default:
# negative_ttl 5 minutes

# TAG: positive_dns_ttl time-units
# Upper limit on how long Squid will cache positive DNS responses.
# Default is 6 hours (360 minutes). This directive must be set
# larger than negative_dns_ttl.
#
#Default:
# positive_dns_ttl 6 hours

# TAG: negative_dns_ttl time-units
# Time-to-Live (TTL) for negative caching of failed DNS lookups.
# This also sets the lower cache limit on positive lookups.
# Minimum value is 1 second, and it is not recommendable to go
# much below 10 seconds.
#
#Default:
# negative_dns_ttl 1 minute

# TAG: range_offset_limit (bytes)
# Sets a upper limit on how far into the the file a Range request
# may be to cause Squid to prefetch the whole file. If beyond this
# limit Squid forwards the Range request as it is and the result
# is NOT cached.
#
# This is to stop a far ahead range request (lets say start at 17MB)
# from making Squid fetch the whole object up to that point before
# sending anything to the client.
#
# A value of -1 causes Squid to always fetch the object from the
# beginning so it may cache the result. (2.0 style)
#
# A value of 0 causes Squid to never fetch more than the
# client requested. (default)
#
#Default:
# range_offset_limit 0 KB

# TAG: minimum_expiry_time (seconds)
# The minimum caching time according to (Expires - Date)
# Headers Squid honors if the object can't be revalidated
# defaults to 60 seconds. In reverse proxy enorinments it
# might be desirable to honor shorter object lifetimes. It
# is most likely better to make your server return a
# meaningful Last-Modified header however.
#
#Default:
# minimum_expiry_time 60 seconds

# TAG: store_avg_object_size (kbytes)
# Average object size, used to estimate number of objects your
# cache can hold. The default is 13 KB.
#
#Default:
# store_avg_object_size 13 KB

# TAG: store_objects_per_bucket
# Target number of objects per bucket in the store hash table.
# Lowering this value increases the total number of buckets and
# also the storage maintenance rate. The default is 20.
#
#Default:
# store_objects_per_bucket 20


# HTTP OPTIONS
# -----------------------------------------------------------------------------

# TAG: request_header_max_size (KB)
# This specifies the maximum size for HTTP headers in a request.
# Request headers are usually relatively small (about 512 bytes).
# Placing a limit on the request header size will catch certain
# bugs (for example with persistent connections) and possibly
# buffer-overflow or denial-of-service attacks.
#
#Default:
# request_header_max_size 20 KB

# TAG: reply_header_max_size (KB)
# This specifies the maximum size for HTTP headers in a reply.
# Reply headers are usually relatively small (about 512 bytes).
# Placing a limit on the reply header size will catch certain
# bugs (for example with persistent connections) and possibly
# buffer-overflow or denial-of-service attacks.
#
#Default:
# reply_header_max_size 20 KB

# TAG: request_body_max_size (KB)
# This specifies the maximum size for an HTTP request body.
# In other words, the maximum size of a PUT/POST request.
# A user who attempts to send a request with a body larger
# than this limit receives an "Invalid Request" error message.
# If you set this parameter to a zero (the default), there will
# be no limit imposed.
#
#Default:
# request_body_max_size 0 KB

# TAG: broken_posts
# A list of ACL elements which, if matched, causes Squid to send
# an extra CRLF pair after the body of a PUT/POST request.
#
# Some HTTP servers has broken implementations of PUT/POST,
# and rely on an extra CRLF pair sent by some WWW clients.
#
# Quote from RFC2616 section 4.1 on this matter:
#
# Note: certain buggy HTTP/1.0 client implementations generate an
# extra CRLF's after a POST request. To restate what is explicitly
# forbidden by the BNF, an HTTP/1.1 client must not preface or follow
# a request with an extra CRLF.
#
#Example:
# acl buggy_server url_regex ^http://....
# broken_posts allow buggy_server
#
#Default:
# none

# TAG: upgrade_http0.9
# This access list controls when HTTP/0.9 responses is upgraded
# to our current HTTP version. The default is to always upgrade.
#
# Some applications expect to be able to respond with non-HTTP
# responses and clients gets confused if the response is upgraded.
# For example SHOUTcast servers used for mp3 streaming.
#
# To enable some flexibility in detection of such applications
# the first line of the response is available in the internal header
# X-HTTP09-First-Line for use in the rep_header acl.
#
# Don't upgrade ShoutCast responses to HTTP
acl shoutcast rep_header X-HTTP09-First-Line ^ICY\s[0-9]
upgrade_http0.9 deny shoutcast

# TAG: via on|off
# If set (default), Squid will include a Via header in requests and
# replies as required by RFC2616.
#
#Default:
# via on

# TAG: cache_vary
# When 'cache_vary' is set to off, response that have a
# Vary header will not be stored in the cache.
#
#Default:
# cache_vary on

# TAG: broken_vary_encoding
# Many servers have broken support for on-the-fly Content-Encoding,
# returning the same ETag on both plain and gzip:ed variants.
# Vary replies matching this access list will have the cache split
# on the Accept-Encoding header of the request and not trusting the
# ETag to be unique.
#
# Apache mod_gzip and mod_deflate known to be broken so don't trust
# Apache to signal ETag correctly on such responses
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache

# TAG: collapsed_forwarding (on|off)
# This option enables multiple requests for the same URI to be
# processed as one request. Normally disabled to avoid increased
# latency on dynamic content, but there can be benefit from enabling
# this in accelerator setups where the web servers are the bottleneck
# and reliable and returns mostly cacheable information.
#
#Default:
# collapsed_forwarding off

# TAG: refresh_stale_hit (time)
# This option changes the refresh algorithm to allow concurrent
# requests while an object is being refreshed to be processed as
# cache hits if the object expired less than X seconds ago. Default
# is 0 to disable this feature. This option is mostly interesting
# in accelerator setups where a few objects is accessed very
# frequently.
#
#Default:
# refresh_stale_hit 0 seconds

# TAG: ie_refresh on|off
# Microsoft Internet Explorer up until version 5.5 Service
# Pack 1 has an issue with transparent proxies, wherein it
# is impossible to force a refresh. Turning this on provides
# a partial fix to the problem, by causing all IMS-REFRESH
# requests from older IE versions to check the origin server
# for fresh content. This reduces hit ratio by some amount
# (~10% in my experience), but allows users to actually get
# fresh content when they want it. Note because Squid
# cannot tell if the user is using 5.5 or 5.5SP1, the behavior
# of 5.5 is unchanged from old versions of Squid (i.e. a
# forced refresh is impossible). Newer versions of IE will,
# hopefully, continue to have the new behavior and will be
# handled based on that assumption. This option defaults to
# the old Squid behavior, which is better for hit ratios but
# worse for clients using IE, if they need to be able to
# force fresh content.
#
#Default:
# ie_refresh off

# TAG: vary_ignore_expire on|off
# Many HTTP servers supporting Vary gives such objects
# immediate expiry time with no cache-control header
# when requested by a HTTP/1.0 client. This option
# enables Squid to ignore such expiry times until
# HTTP/1.1 is fully implemented.
# WARNING: This may eventually cause some varying
# objects not intended for caching to get cached.
#
#Default:
# vary_ignore_expire off

# TAG: extension_methods
# Squid only knows about standardized HTTP request methods.
# You can add up to 20 additional "extension" methods here.
extension_methods REPORT MERGE MKACTIVITY CHECKOUT

# TAG: request_entities
# Squid defaults to deny GET and HEAD requests with request entities,
# as the meaning of such requests are undefined in the HTTP standard
# even if not explicitly forbidden.
#
# Set this directive to on if you have clients which insists
# on sending request entities in GET or HEAD requests. But be warned
# that there is server software (both proxies and web servers) which
# can fail to properly process this kind of request which may make you
# vulnerable to cache pollution attacks if enabled.
#
#Default:
# request_entities off

# TAG: header_access
# Usage: header_access header_name allow|deny [!]aclname ...
#
# WARNING: Doing this VIOLATES the HTTP standard. Enabling
# this feature could make you liable for problems which it
# causes.
#
# This option replaces the old 'anonymize_headers' and the
# older 'http_anonymizer' option with something that is much
# more configurable. This new method creates a list of ACLs
# for each header, allowing you very fine-tuned header
# mangling.
#
# You can only specify known headers for the header name.
# Other headers are reclassified as 'Other'. You can also
# refer to all the headers with 'All'.
#
# For example, to achieve the same behavior as the old
# 'http_anonymizer standard' option, you should use:
#
# header_access From deny all
# header_access Referer deny all
# header_access Server deny all
# header_access User-Agent deny all
# header_access WWW-Authenticate deny all
# header_access Link deny all
#
# Or, to reproduce the old 'http_anonymizer paranoid' feature
# you should use:
#
# header_access Allow allow all
# header_access Authorization allow all
# header_access WWW-Authenticate allow all
# header_access Proxy-Authorization allow all
# header_access Proxy-Authenticate allow all
# header_access Cache-Control allow all
# header_access Content-Encoding allow all
# header_access Content-Length allow all
# header_access Content-Type allow all
# header_access Date allow all
# header_access Expires allow all
# header_access Host allow all
# header_access If-Modified-Since allow all
# header_access Last-Modified allow all
# header_access Location allow all
# header_access Pragma allow all
# header_access Accept allow all
# header_access Accept-Charset allow all
# header_access Accept-Encoding allow all
# header_access Accept-Language allow all
# header_access Content-Language allow all
# header_access Mime-Version allow all
# header_access Retry-After allow all
# header_access Title allow all
# header_access Connection allow all
# header_access Proxy-Connection allow all
# header_access All deny all
#
# By default, all headers are allowed (no anonymizing is
# performed).
#
#Default:
# none

# TAG: header_replace
# Usage: header_replace header_name message
# Example: header_replace User-Agent Nutscrape/1.0 (CP/M; 8-bit)
#
# This option allows you to change the contents of headers
# denied with header_access above, by replacing them with
# some fixed string. This replaces the old fake_user_agent
# option.
#
# By default, headers are removed if denied.
#
#Default:
# none

# TAG: relaxed_header_parser on|off|warn
# In the default "on" setting Squid accepts certain forms
# of non-compliant HTTP messages where it is unambiguous
# what the sending application intended even if the message
# is not correctly formatted. The messages is then normalized
# to the correct form when forwarded by Squid.
#
# If set to "warn" then a warning will be emitted in cache.log
# each time such HTTP error is encountered.
#
# If set to "off" then such HTTP errors will cause the request
# or response to be rejected.
#
#Default:
# relaxed_header_parser on

# TAG: server_http11 on|off
# This option enables the use ot HTTP/1.1 on outgoing "direct" requests.
# See also the http11 cache_peer option.
# Note: The HTTP/1.1 support is still incomplete, with an
# internal HTTP/1.0 hop. As result 1xx responses will not
# be forwarded.
#
#Default:
# server_http11 off

# TAG: ignore_expect_100 on|off
# This option makes Squid ignore any Expect: 100-continue header present
# in the request.
# Note: Enabling this is a HTTP protocol violation, but some client may
# not handle it well..
#
#Default:
# ignore_expect_100 off

# TAG: external_refresh_check
# This option defines an external helper for determining whether to
# refresh a stale response. It will be called when Squid receives a
# request for a cached response that is stale; the helper can either
# confirm that the response is stale with a STALE response, or
# extend the freshness of the response (thereby avoiding a refresh
# check) with a FRESH response, along with a freshness=nnn keyword.
#
# external_refresh_check [options] FORMAT.. /path/to/helper [helper_args]
#
# If present, helper_args will be passed to the helper on the command
# line verbatim.
#
# Options:
#
# children=n Number of processes to spawn to service external
# refresh checks (default 5).
# concurrency=n Concurrency level per process. Only used with
# helpers capable of processing more than one query
# at a time.
#
# When using the concurrency option, the protocol is changed by introducing
# a query channel tag infront of the request/response. The query channel
# tag is a number between 0 and concurrency?1.
#
# FORMAT specifications:
#
# %CACHE_URI The URI of the cached response
# %RES{Header} HTTP response header value
# %AGE The age of the cached response
#
# The request sent to the helper consists of the data in the format
# specification in the order specified.
#
# The helper receives lines per the above format specification, and
# returns lines starting with OK or ERR indicating the validity of
# the request and optionally followed by additional keywords with
# more details. URL escaping is used to protect each value in both
# requests and responses.
#
# General result syntax:
#
# FRESH / STALE keyword=value ...
#
# Defined keywords:
#
# freshness=nnn The number of seconds to extend the freshness of
# the response by.
# log=string String to be logged in access.log. Available as
# %ef in logformat specifications.
# res{Header}=value
# Value to update response headers with. If already
# present, the supplied value completely replaces
# the cached value.
#
# In the event of a helper?related error (e.g., overload), Squid
# will always default to STALE.
#
#Default:
# none


# TIMEOUTS
# -----------------------------------------------------------------------------

# TAG: forward_timeout time-units
# This parameter specifies how long Squid should at most attempt in
# finding a forwarding path for the request before giving up.
#
#Default:
# forward_timeout 4 minutes

# TAG: connect_timeout time-units
# This parameter specifies how long to wait for the TCP connect to
# the requested server or peer to complete before Squid should
# attempt to find another path where to forward the request.
#
#Default:
# connect_timeout 1 minute

# TAG: peer_connect_timeout time-units
# This parameter specifies how long to wait for a pending TCP
# connection to a peer cache. The default is 30 seconds. You
# may also set different timeout values for individual neighbors
# with the 'connect-timeout' option on a 'cache_peer' line.
#
#Default:
# peer_connect_timeout 30 seconds

# TAG: read_timeout time-units
# The read_timeout is applied on server-side connections. After
# each successful read(), the timeout will be extended by this
# amount. If no data is read again after this amount of time,
# the request is aborted and logged with ERR_READ_TIMEOUT. The
# default is 15 minutes.
#
#Default:
# read_timeout 15 minutes

# TAG: request_timeout
# How long to wait for an HTTP request after initial
# connection establishment.
#
#Default:
# request_timeout 5 minutes

# TAG: persistent_request_timeout
# How long to wait for the next HTTP request on a persistent
# connection after the previous request completes.
#
#Default:
# persistent_request_timeout 2 minutes

# TAG: client_lifetime time-units
# The maximum amount of time a client (browser) is allowed to
# remain connected to the cache process. This protects the Cache
# from having a lot of sockets (and hence file descriptors) tied up
# in a CLOSE_WAIT state from remote clients that go away without
# properly shutting down (either because of a network failure or
# because of a poor client implementation). The default is one
# day, 1440 minutes.
#
# NOTE: The default value is intended to be much larger than any
# client would ever need to be connected to your cache. You
# should probably change client_lifetime only as a last resort.
# If you seem to have many client connections tying up
# filedescriptors, we recommend first tuning the read_timeout,
# request_timeout, persistent_request_timeout and quick_abort values.
#
#Default:
# client_lifetime 1 day

# TAG: half_closed_clients
# Some clients may shutdown the sending side of their TCP
# connections, while leaving their receiving sides open. Sometimes,
# Squid can not tell the difference between a half-closed and a
# fully-closed TCP connection. By default, half-closed client
# connections are kept open until a read(2) or write(2) on the
# socket returns an error. Change this option to 'off' and Squid
# will immediately close client connections when read(2) returns
# "no more data to read."
#
#Default:
# half_closed_clients on

# TAG: pconn_timeout
# Timeout for idle persistent connections to servers and other
# proxies.
#
#Default:
# pconn_timeout 1 minute

# TAG: ident_timeout
# Maximum time to wait for IDENT lookups to complete.
#
# If this is too high, and you enabled IDENT lookups from untrusted
# users, you might be susceptible to denial-of-service by having
# many ident requests going at once.
#
#Default:
# ident_timeout 10 seconds

# TAG: shutdown_lifetime time-units
# When SIGTERM or SIGHUP is received, the cache is put into
# "shutdown pending" mode until all active sockets are closed.
# This value is the lifetime to set for all open descriptors
# during shutdown mode. Any active clients after this many
# seconds will receive a 'timeout' message.
#
#Default:
# shutdown_lifetime 30 seconds


# ADMINISTRATIVE PARAMETERS
# -----------------------------------------------------------------------------

# TAG: cache_mgr
# Email-address of local cache manager who will receive
# mail if the cache dies. The default is "webmaster".
#
#Default:
# cache_mgr webmaster

# TAG: mail_from
# From: email-address for mail sent when the cache dies.
# The default is to use 'appname@unique_hostname'.
# Default appname value is "squid", can be changed into
# src/globals.h before building squid.
#
#Default:
# none

# TAG: mail_program
# Email program used to send mail if the cache dies.
# The default is "mail". The specified program must comply
# with the standard Unix mail syntax:
# mail-program recipient < mailfile
#
# Optional command line options can be specified.
#
#Default:
# mail_program mail

# TAG: cache_effective_user
# If you start Squid as root, it will change its effective/real
# UID/GID to the user specified below. The default is to change
# to UID to proxy. If you define cache_effective_user, but not
# cache_effective_group, Squid sets the GID to the effective
# user's default group ID (taken from the password file) and
# supplementary group list from the from groups membership of
# cache_effective_user.
#
#Default:
# cache_effective_user proxy

# TAG: cache_effective_group
# If you want Squid to run with a specific GID regardless of
# the group memberships of the effective user then set this
# to the group (or GID) you want Squid to run as. When set
# all other group privileges of the effective user is ignored
# and only this GID is effective. If Squid is not started as
# root the user starting Squid must be member of the specified
# group.
#
#Default:
# none

# TAG: httpd_suppress_version_string on|off
# Suppress Squid version string info in HTTP headers and HTML error pages.
#
#Default:
# httpd_suppress_version_string off

# TAG: visible_hostname
# If you want to present a special hostname in error messages, etc,
# define this. Otherwise, the return value of gethostname()
# will be used. If you have multiple caches in a cluster and
# get errors about IP-forwarding you must set them to have individual
# names with this setting.
#
#Default:
# none

visible_hostname localhost

# TAG: unique_hostname
# If you want to have multiple machines with the same
# 'visible_hostname' you must give each machine a different
# 'unique_hostname' so forwarding loops can be detected.
#
#Default:
# none

# TAG: hostname_aliases
# A list of other DNS names your cache has.
#
#Default:
# none

# TAG: umask
# Minimum umask which should be enforced while the proxy
# is running, in addition to the umask set at startup.
#
# Note: Should start with a 0 to indicate the normal octal
# representation of umasks
#
#Default:
# umask 027


# OPTIONS FOR THE CACHE REGISTRATION SERVICE
# -----------------------------------------------------------------------------
#
# This section contains parameters for the (optional) cache
# announcement service. This service is provided to help
# cache administrators locate one another in order to join or
# create cache hierarchies.
#
# An 'announcement' message is sent (via UDP) to the registration
# service by Squid. By default, the announcement message is NOT
# SENT unless you enable it with 'announce_period' below.
#
# The announcement message includes your hostname, plus the
# following information from this configuration file:
#
# http_port
# icp_port
# cache_mgr
#
# All current information is processed regularly and made
# available on the Web at http://www.ircache.net/Cache/Tracker/.

# TAG: announce_period
# This is how frequently to send cache announcements. The
# default is `0' which disables sending the announcement
# messages.
#
# To enable announcing your cache, just uncomment the line
# below.
#
#Default:
# announce_period 0
#
#To enable announcing your cache, just uncomment the line below.
#announce_period 1 day

# TAG: announce_host
# TAG: announce_file
# TAG: announce_port
# announce_host and announce_port set the hostname and port
# number where the registration message will be sent.
#
# Hostname will default to 'tracker.ircache.net' and port will
# default default to 3131. If the 'filename' argument is given,
# the contents of that file will be included in the announce
# message.
#
#Default:
# announce_host tracker.ircache.net
# announce_port 3131


# HTTPD-ACCELERATOR OPTIONS
# -----------------------------------------------------------------------------

# TAG: httpd_accel_no_pmtu_disc on|off
# In many setups of transparently intercepting proxies Path-MTU
# discovery can not work on traffic towards the clients. This is
# the case when the intercepting device does not fully track
# connections and fails to forward ICMP must fragment messages
# to the cache server.
#
# If you have such setup and experience that certain clients
# sporadically hang or never complete requests set this to on.
#
#Default:
# httpd_accel_no_pmtu_disc off


# DELAY POOL PARAMETERS
# -----------------------------------------------------------------------------

# TAG: delay_pools
# This represents the number of delay pools to be used. For example,
# if you have one class 2 delay pool and one class 3 delays pool, you
# have a total of 2 delay pools.
#
#Default:
# delay_pools 0

# TAG: delay_class
# This defines the class of each delay pool. There must be exactly one
# delay_class line for each delay pool. For example, to define two
# delay pools, one of class 2 and one of class 3, the settings above
# and here would be:
#
#Example:
# delay_pools 2 # 2 delay pools
# delay_class 1 2 # pool 1 is a class 2 pool
# delay_class 2 3 # pool 2 is a class 3 pool
#
# The delay pool classes are:
#
# class 1 Everything is limited by a single aggregate
# bucket.
#
# class 2 Everything is limited by a single aggregate
# bucket as well as an "individual" bucket chosen
# from bits 25 through 32 of the IP address.
#
# class 3 Everything is limited by a single aggregate
# bucket as well as a "network" bucket chosen
# from bits 17 through 24 of the IP address and a
# "individual" bucket chosen from bits 17 through
# 32 of the IP address.
#
# NOTE: If an IP address is a.b.c.d
# -> bits 25 through 32 are "d"
# -> bits 17 through 24 are "c"
# -> bits 17 through 32 are "c * 256 + d"
#
#Default:
# none

# TAG: delay_access
# This is used to determine which delay pool a request falls into.
#
# delay_access is sorted per pool and the matching starts with pool 1,
# then pool 2, ..., and finally pool N. The first delay pool where the
# request is allowed is selected for the request. If it does not allow
# the request to any pool then the request is not delayed (default).
#
# For example, if you want some_big_clients in delay
# pool 1 and lotsa_little_clients in delay pool 2:
#
#Example:
# delay_access 1 allow some_big_clients
# delay_access 1 deny all
# delay_access 2 allow lotsa_little_clients
# delay_access 2 deny all
#
#Default:
# none

# TAG: delay_parameters
# This defines the parameters for a delay pool. Each delay pool has
# a number of "buckets" associated with it, as explained in the
# description of delay_class. For a class 1 delay pool, the syntax is:
#
#delay_parameters pool aggregate
#
# For a class 2 delay pool:
#
#delay_parameters pool aggregate individual
#
# For a class 3 delay pool:
#
#delay_parameters pool aggregate network individual
#
# The variables here are:
#
# pool a pool number - ie, a number between 1 and the
# number specified in delay_pools as used in
# delay_class lines.
#
# aggregate the "delay parameters" for the aggregate bucket
# (class 1, 2, 3).
#
# individual the "delay parameters" for the individual
# buckets (class 2, 3).
#
# network the "delay parameters" for the network buckets
# (class 3).
#
# A pair of delay parameters is written restore/maximum, where restore is
# the number of bytes (not bits - modem and network speeds are usually
# quoted in bits) per second placed into the bucket, and maximum is the
# maximum number of bytes which can be in the bucket at any time.
#
# For example, if delay pool number 1 is a class 2 delay pool as in the
# above example, and is being used to strictly limit each host to 64kbps
# (plus overheads), with no overall limit, the line is:
#
#delay_parameters 1 -1/-1 8000/8000
#
# Note that the figure -1 is used to represent "unlimited".
#
# And, if delay pool number 2 is a class 3 delay pool as in the above
# example, and you want to limit it to a total of 256kbps (strict limit)
# with each 8-bit network permitted 64kbps (strict limit) and each
# individual host permitted 4800bps with a bucket maximum size of 64kb
# to permit a decent web page to be downloaded at a decent speed
# (if the network is not being limited due to overuse) but slow down
# large downloads more significantly:
#
#delay_parameters 2 32000/32000 8000/8000 600/8000
#
# There must be one delay_parameters line for each delay pool.
#
#Default:
# none

# TAG: delay_initial_bucket_level (percent, 0-100)
# The initial bucket percentage is used to determine how much is put
# in each bucket when squid starts, is reconfigured, or first notices
# a host accessing it (in class 2 and class 3, individual hosts and
# networks only have buckets associated with them once they have been
# "seen" by squid).
#
#Default:
# delay_initial_bucket_level 50


# WCCPv1 AND WCCPv2 CONFIGURATION OPTIONS
# -----------------------------------------------------------------------------

# TAG: wccp_router
# TAG: wccp2_router
# Use this option to define your WCCP ``home'' router for
# Squid.
#
# wccp_router supports a single WCCP(v1) router
#
# wccp2_router supports multiple WCCPv2 routers
#
# only one of the two may be used at the same time and defines
# which version of WCCP to use.
#
#Default:
# wccp_router 0.0.0.0

# TAG: wccp_version
# This directive is only relevant if you need to set up WCCP(v1)
# to some very old and end-of-life Cisco routers. In all other
# setups it must be left unset or at the default setting.
# It defines an internal version in the WCCP(v1) protocol,
# with version 4 being the officially documented protocol.
#
# According to some users, Cisco IOS 11.2 and earlier only
# support WCCP version 3. If you're using that or an earlier
# version of IOS, you may need to change this value to 3, otherwise
# do not specify this parameter.
#
#Default:
# wccp_version 4

# TAG: wccp2_rebuild_wait
# If this is enabled Squid will wait for the cache dir rebuild to finish
# before sending the first wccp2 HereIAm packet
#
#Default:
# wccp2_rebuild_wait on

# TAG: wccp2_forwarding_method
# WCCP2 allows the setting of forwarding methods between the
# router/switch and the cache. Valid values are as follows:
#
# 1 - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
# 2 - L2 redirect (forward the packet using Layer 2/MAC rewriting)
#
# Currently (as of IOS 12.4) cisco routers only support GRE.
# Cisco switches only support the L2 redirect assignment method.
#
#Default:
# wccp2_forwarding_method 1

# TAG: wccp2_return_method
# WCCP2 allows the setting of return methods between the
# router/switch and the cache for packets that the cache
# decides not to handle. Valid values are as follows:
#
# 1 - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
# 2 - L2 redirect (forward the packet using Layer 2/MAC rewriting)
#
# Currently (as of IOS 12.4) cisco routers only support GRE.
# Cisco switches only support the L2 redirect assignment.
#
# If the "ip wccp redirect exclude in" command has been
# enabled on the cache interface, then it is still safe for
# the proxy server to use a l2 redirect method even if this
# option is set to GRE.
#
#Default:
# wccp2_return_method 1

# TAG: wccp2_assignment_method
# WCCP2 allows the setting of methods to assign the WCCP hash
# Valid values are as follows:
#
# 1 - Hash assignment
# 2 - Mask assignment
#
# As a general rule, cisco routers support the hash assignment method
# and cisco switches support the mask assignment method.
#
#Default:
# wccp2_assignment_method 1

# TAG: wccp2_service
# WCCP2 allows for multiple traffic services. There are two
# types: "standard" and "dynamic". The standard type defines
# one service id - http (id 0). The dynamic service ids can be from
# 51 to 255 inclusive. In order to use a dynamic service id
# one must define the type of traffic to be redirected; this is done
# using the wccp2_service_info option.
#
# The "standard" type does not require a wccp2_service_info option,
# just specifying the service id will suffice.
#
# MD5 service authentication can be enabled by adding
# "password=<password>" to the end of this service declaration.
#
# Examples:
#
# wccp2_service standard 0 # for the 'web-cache' standard service
# wccp2_service dynamic 80 # a dynamic service type which will be
# # fleshed out with subsequent options.
# wccp2_service standard 0 password=foo
#
#
#Default:
# wccp2_service standard 0

# TAG: wccp2_service_info
# Dynamic WCCPv2 services require further information to define the
# traffic you wish to have diverted.
#
# The format is:
#
# wccp2_service_info <id> protocol=<protocol> flags=<flag>,<flag>..
# priority=<priority> ports=<port>,<port>..
#
# The relevant WCCPv2 flags:
# + src_ip_hash, dst_ip_hash
# + source_port_hash, dst_port_hash
# + src_ip_alt_hash, dst_ip_alt_hash
# + src_port_alt_hash, dst_port_alt_hash
# + ports_source
#
# The port list can be one to eight entries.
#
# Example:
#
# wccp2_service_info 80 protocol=tcp flags=src_ip_hash,ports_source
# priority=240 ports=80
#
# Note: the service id must have been defined by a previous
# 'wccp2_service dynamic <id>' entry.
#
#Default:
# none

# TAG: wccp2_weight
# Each cache server gets assigned a set of the destination
# hash proportional to their weight.
#
#Default:
# wccp2_weight 10000

# TAG: wccp_address
# TAG: wccp2_address
# Use this option if you require WCCP to use a specific
# interface address.
#
# The default behavior is to not bind to any specific address.
#
#Default:
# wccp_address 0.0.0.0
# wccp2_address 0.0.0.0


# PERSISTENT CONNECTION HANDLING
# -----------------------------------------------------------------------------
#
# Also see "pconn_timeout" in the TIMEOUTS section

# TAG: client_persistent_connections
# TAG: server_persistent_connections
# Persistent connection support for clients and servers. By
# default, Squid uses persistent connections (when allowed)
# with its clients and servers. You can use these options to
# disable persistent connections with clients and/or servers.
#
#Default:
# client_persistent_connections on
# server_persistent_connections on

# TAG: persistent_connection_after_error
# With this directive the use of persistent connections after
# HTTP errors can be disabled. Useful if you have clients
# who fail to handle errors on persistent connections proper.
#
#Default:
# persistent_connection_after_error off

# TAG: detect_broken_pconn
# Some servers have been found to incorrectly signal the use
# of HTTP/1.0 persistent connections even on replies not
# compatible, causing significant delays. This server problem
# has mostly been seen on redirects.
#
# By enabling this directive Squid attempts to detect such
# broken replies and automatically assume the reply is finished
# after 10 seconds timeout.
#
#Default:
# detect_broken_pconn off


# CACHE DIGEST OPTIONS
# -----------------------------------------------------------------------------

# TAG: digest_generation
# This controls whether the server will generate a Cache Digest
# of its contents.
#
#Default:
# digest_generation on

# TAG: digest_bits_per_entry
# This is the number of bits of the server's Cache Digest which
# will be associated with the Digest entry for a given HTTP
# Method and URL (public key) combination. The default is 5.
#
#Default:
# digest_bits_per_entry 5

# TAG: digest_rebuild_period (seconds)
# This is the wait time between Cache Digest rebuilds.
#
#Default:
# digest_rebuild_period 1 hour

# TAG: digest_rewrite_period (seconds)
# This is the wait time between Cache Digest writes to disk.
#
#Default:
# digest_rewrite_period 1 hour

# TAG: digest_swapout_chunk_size (bytes)
# This is the number of bytes of the Cache Digest to write to
# disk at a time. It defaults to 4096 bytes (4KB), the Squid
# default swap page.
#
#Default:
# digest_swapout_chunk_size 4096 bytes

# TAG: digest_rebuild_chunk_percentage (percent, 0-100)
# This is the percentage of the Cache Digest to be scanned at a
# time. By default it is set to 10% of the Cache Digest.
#
#Default:
# digest_rebuild_chunk_percentage 10


# SNMP OPTIONS
# -----------------------------------------------------------------------------

# TAG: snmp_port
# Squid can now serve statistics and status information via SNMP.
# By default it listens to port 3401 on the machine. If you don't
# wish to use SNMP, set this to "0".
#
# Note: on Debian/Linux, the default is zero - you need to
# set it to 3401 to enable it.
#
#Default:
# snmp_port 0

# TAG: snmp_access
# Allowing or denying access to the SNMP port.
#
# All access to the agent is denied by default.
# usage:
#
# snmp_access allow|deny [!]aclname ...
#
#Example:
# snmp_access allow snmppublic localhost
# snmp_access deny all
#
#Default:
# snmp_access deny all

# TAG: snmp_incoming_address
# TAG: snmp_outgoing_address
# Just like 'udp_incoming_address' above, but for the SNMP port.
#
# snmp_incoming_address is used for the SNMP socket receiving
# messages from SNMP agents.
# snmp_outgoing_address is used for SNMP packets returned to SNMP
# agents.
#
# The default snmp_incoming_address (0.0.0.0) is to listen on all
# available network interfaces.
#
# If snmp_outgoing_address is set to 255.255.255.255 (the default)
# it will use the same socket as snmp_incoming_address. Only
# change this if you want to have SNMP replies sent using another
# address than where this Squid listens for SNMP queries.
#
# NOTE, snmp_incoming_address and snmp_outgoing_address can not have
# the same value since they both use port 3401.
#
#Default:
# snmp_incoming_address 0.0.0.0
# snmp_outgoing_address 255.255.255.255


# ICP OPTIONS
# -----------------------------------------------------------------------------

# TAG: icp_port
# The port number where Squid sends and receives ICP queries to
# and from neighbor caches. Default is 3130. To disable use
# "0". May be overridden with -u on the command line.
#
#Default:
# icp_port 3130

# TAG: htcp_port
# The port number where Squid sends and receives HTCP queries to
# and from neighbor caches. To turn it on you want to set it 4827.
# By default it is set to "0" (disabled).
#
#Default:
# htcp_port 0

# TAG: log_icp_queries on|off
# If set, ICP queries are logged to access.log. You may wish
# do disable this if your ICP load is VERY high to speed things
# up or to simplify log analysis.
#
#Default:
# log_icp_queries on

# TAG: udp_incoming_address
# udp_incoming_address is used for UDP packets received from other
# caches.
#
# The default behavior is to not bind to any specific address.
#
# Only change this if you want to have all UDP queries received on
# a specific interface/address.
#
# NOTE: udp_incoming_address is used by the ICP, HTCP, and DNS
# modules. Altering it will affect all of them in the same manner.
#
# see also; udp_outgoing_address
#
# NOTE, udp_incoming_address and udp_outgoing_address can not
# have the same value since they both use the same port.
#
#Default:
# udp_incoming_address 0.0.0.0

# TAG: udp_outgoing_address
# udp_outgoing_address is used for UDP packets sent out to other
# caches.
#
# The default behavior is to not bind to any specific address.
#
# Instead it will use the same socket as udp_incoming_address.
# Only change this if you want to have UDP queries sent using another
# address than where this Squid listens for UDP queries from other
# caches.
#
# NOTE: udp_outgoing_address is used by the ICP, HTCP, and DNS
# modules. Altering it will affect all of them in the same manner.
#
# see also; udp_incoming_address
#
# NOTE, udp_incoming_address and udp_outgoing_address can not
# have the same value since they both use the same port.
#
#Default:
# udp_outgoing_address 255.255.255.255

# TAG: icp_hit_stale on|off
# If you want to return ICP_HIT for stale cache objects, set this
# option to 'on'. If you have sibling relationships with caches
# in other administrative domains, this should be 'off'. If you only
# have sibling relationships with caches under your control,
# it is probably okay to set this to 'on'.
# If set to 'on', your siblings should use the option "allow-miss"
# on their cache_peer lines for connecting to you.
#
#Default:
# icp_hit_stale off

# TAG: minimum_direct_hops
# If using the ICMP pinging stuff, do direct fetches for sites
# which are no more than this many hops away.
#
#Default:
# minimum_direct_hops 4

# TAG: minimum_direct_rtt
# If using the ICMP pinging stuff, do direct fetches for sites
# which are no more than this many rtt milliseconds away.
#
#Default:
# minimum_direct_rtt 400

# TAG: netdb_low
# TAG: netdb_high
# The low and high water marks for the ICMP measurement
# database. These are counts, not percents. The defaults are
# 900 and 1000. When the high water mark is reached, database
# entries will be deleted until the low mark is reached.
#
#Default:
# netdb_low 900
# netdb_high 1000

# TAG: netdb_ping_period
# The minimum period for measuring a site. There will be at
# least this much delay between successive pings to the same
# network. The default is five minutes.
#
#Default:
# netdb_ping_period 5 minutes

# TAG: query_icmp on|off
# If you want to ask your peers to include ICMP data in their ICP
# replies, enable this option.
#
# If your peer has configured Squid (during compilation) with
# '--enable-icmp' that peer will send ICMP pings to origin server
# sites of the URLs it receives. If you enable this option the
# ICP replies from that peer will include the ICMP data (if available).
# Then, when choosing a parent cache, Squid will choose the parent with
# the minimal RTT to the origin server. When this happens, the
# hierarchy field of the access.log will be
# "CLOSEST_PARENT_MISS". This option is off by default.
#
#Default:
# query_icmp off

# TAG: test_reachability on|off
# When this is 'on', ICP MISS replies will be ICP_MISS_NOFETCH
# instead of ICP_MISS if the target host is NOT in the ICMP
# database, or has a zero RTT.
#
#Default:
# test_reachability off

# TAG: icp_query_timeout (msec)
# Normally Squid will automatically determine an optimal ICP
# query timeout value based on the round-trip-time of recent ICP
# queries. If you want to override the value determined by
# Squid, set this 'icp_query_timeout' to a non-zero value. This
# value is specified in MILLISECONDS, so, to use a 2-second
# timeout (the old default), you would write:
#
# icp_query_timeout 2000
#
#Default:
# icp_query_timeout 0

# TAG: maximum_icp_query_timeout (msec)
# Normally the ICP query timeout is determined dynamically. But
# sometimes it can lead to very large values (say 5 seconds).
# Use this option to put an upper limit on the dynamic timeout
# value. Do NOT use this option to always use a fixed (instead
# of a dynamic) timeout value. To set a fixed timeout see the
# 'icp_query_timeout' directive.
#
#Default:
# maximum_icp_query_timeout 2000

# TAG: minimum_icp_query_timeout (msec)
# Normally the ICP query timeout is determined dynamically. But
# sometimes it can lead to very small timeouts, even lower than
# the normal latency variance on your link due to traffic.
# Use this option to put an lower limit on the dynamic timeout
# value. Do NOT use this option to always use a fixed (instead
# of a dynamic) timeout value. To set a fixed timeout see the
# 'icp_query_timeout' directive.
#
#Default:
# minimum_icp_query_timeout 5


# MULTICAST ICP OPTIONS
# -----------------------------------------------------------------------------

# TAG: mcast_groups
# This tag specifies a list of multicast groups which your server
# should join to receive multicasted ICP queries.
#
# NOTE! Be very careful what you put here! Be sure you
# understand the difference between an ICP _query_ and an ICP
# _reply_. This option is to be set only if you want to RECEIVE
# multicast queries. Do NOT set this option to SEND multicast
# ICP (use cache_peer for that). ICP replies are always sent via
# unicast, so this option does not affect whether or not you will
# receive replies from multicast group members.
#
# You must be very careful to NOT use a multicast address which
# is already in use by another group of caches.
#
# If you are unsure about multicast, please read the Multicast
# chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/).
#
# Usage: mcast_groups 239.128.16.128 224.0.1.20
#
# By default, Squid doesn't listen on any multicast groups.
#
#Default:
# none

# TAG: mcast_miss_addr
# Note: This option is only available if Squid is rebuilt with the
# --enable-multicast-miss option
#
# If you enable this option, every "cache miss" URL will
# be sent out on the specified multicast address.
#
# Do not enable this option unless you are are absolutely
# certain you understand what you are doing.
#
#Default:
# mcast_miss_addr 255.255.255.255

# TAG: mcast_miss_ttl
# Note: This option is only available if Squid is rebuilt with the
# --enable-multicast-miss option
#
# This is the time-to-live value for packets multicasted
# when multicasting off cache miss URLs is enabled. By
# default this is set to 'site scope', i.e. 16.
#
#Default:
# mcast_miss_ttl 16

# TAG: mcast_miss_port
# Note: This option is only available if Squid is rebuilt with the
# --enable-multicast-miss option
#
# This is the port number to be used in conjunction with
# 'mcast_miss_addr'.
#
#Default:
# mcast_miss_port 3135

# TAG: mcast_miss_encode_key
# Note: This option is only available if Squid is rebuilt with the
# --enable-multicast-miss option
#
# The URLs that are sent in the multicast miss stream are
# encrypted. This is the encryption key.
#
#Default:
# mcast_miss_encode_key XXXXXXXXXXXXXXXX

# TAG: mcast_icp_query_timeout (msec)
# For multicast peers, Squid regularly sends out ICP "probes" to
# count how many other peers are listening on the given multicast
# address. This value specifies how long Squid should wait to
# count all the replies. The default is 2000 msec, or 2
# seconds.
#
#Default:
# mcast_icp_query_timeout 2000


# INTERNAL ICON OPTIONS
# -----------------------------------------------------------------------------

# TAG: icon_directory
# Where the icons are stored. These are normally kept in
# /usr/share/squid/icons
#
#Default:
icon_directory /usr/share/squid/icons

# TAG: global_internal_static
# This directive controls is Squid should intercept all requests for
# /squid-internal-static/ no matter which host the URL is requesting
# (default on setting), or if nothing special should be done for
# such URLs (off setting). The purpose of this directive is to make
# icons etc work better in complex cache hierarchies where it may
# not always be possible for all corners in the cache mesh to reach
# the server generating a directory listing.
#
#Default:
# global_internal_static on

# TAG: short_icon_urls
# If this is enabled Squid will use short URLs for icons.
#
# If off the URLs for icons will always be absolute URLs
# including the proxy name and port.
#
#Default:
short_icon_urls on


# ERROR PAGE OPTIONS
# -----------------------------------------------------------------------------

# TAG: error_directory
# If you wish to create your own versions of the default
# (English) error files, either to customize them to suit your
# language or company copy the template English files to another
# directory and point this tag at them.
#
# The squid developers are interested in making squid available in
# a wide variety of languages. If you are making translations for a
# langauge that Squid does not currently provide please consider
# contributing your translation back to the project.
#
#Default:
error_directory /usr/share/squid/errors/Spanish

# TAG: error_map
# Map errors to custom messages
#
# error_map message_url http_status ...
#
# http_status ... is a list of HTTP status codes or Squid error
# messages.
#
# Use in accelerators to substitute the error messages returned
# by servers with other custom errors.
#
# error_map http://your.server/error/404.shtml 404
#
# Requests for error messages is a GET request for the configured
# URL with the following special headers
#
# X-Error-Status: The received HTTP status code (i.e. 404)
# X-Request-URI: The requested URI where the error occurred
#
# In Addition the following headers are forwarded from the client
# request:
#
# User-Agent, Cookie, X-Forwarded-For, Via, Authorization,
# Accept, Referer
#
# And the following headers from the server reply:
#
# Server, Via, Location, Content-Location
#
# The reply returned to the client will carry the original HTTP
# headers from the real error message, but with the reply body
# of the configured error message.
#
#
#Default:
# none

# TAG: err_html_text
# HTML text to include in error messages. Make this a "mailto"
# URL to your admin address, or maybe just a link to your
# organizations Web page.
#
# To include this in your error messages, you must rewrite
# the error template files (found in the "errors" directory).
# Wherever you want the 'err_html_text' line to appear,
# insert a %L tag in the error template file.
#
#Default:
# none

# TAG: deny_info
# Usage: deny_info err_page_name acl
# or deny_info http://... acl
# Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
#
# This can be used to return a ERR_ page for requests which
# do not pass the 'http_access' rules. Squid remembers the last
# acl it evaluated in http_access, and if a 'deny_info' line exists
# for that ACL Squid returns a corresponding error page.
#
# The acl is typically the last acl on the http_access deny line which
# denied access. The exceptions to this rule are:
# - When Squid needs to request authentication credentials. It's then
# the first authentication related acl encountered
# - When none of the http_access lines matches. It's then the last
# acl processed on the last http_access line.
#
# You may use ERR_ pages that come with Squid or create your own pages
# and put them into the configured errors/ directory.
#
# Alternatively you can specify an error URL. The browsers will
# get redirected (302) to the specified URL. %s in the redirection
# URL will be replaced by the requested URL.
#
# Alternatively you can tell Squid to reset the TCP connection
# by specifying TCP_RESET.
#
#Default:
# none


# OPTIONS INFLUENCING REQUEST FORWARDING
# -----------------------------------------------------------------------------

# TAG: nonhierarchical_direct
# By default, Squid will send any non-hierarchical requests
# (matching hierarchy_stoplist or not cacheable request type) direct
# to origin servers.
#
# If you set this to off, Squid will prefer to send these
# requests to parents.
#
# Note that in most configurations, by turning this off you will only
# add latency to these request without any improvement in global hit
# ratio.
#
# If you are inside an firewall see never_direct instead of
# this directive.
#
#Default:
# nonhierarchical_direct on

# TAG: prefer_direct
# Normally Squid tries to use parents for most requests. If you for some
# reason like it to first try going direct and only use a parent if
# going direct fails set this to on.
#
# By combining nonhierarchical_direct off and prefer_direct on you
# can set up Squid to use a parent as a backup path if going direct
# fails.
#
# Note: If you want Squid to use parents for all requests see
# the never_direct directive. prefer_direct only modifies how Squid
# acts on cacheable requests.
#
#Default:
# prefer_direct off

# TAG: ignore_ims_on_miss on|off
# This options makes Squid ignore If-Modified-Since on
# cache misses. This is useful while the cache is
# mostly empty to more quickly have the cache populated.
#
#Default:
# ignore_ims_on_miss off

# TAG: always_direct
# Usage: always_direct allow|deny [!]aclname ...
#
# Here you can use ACL elements to specify requests which should
# ALWAYS be forwarded by Squid to the origin servers without using
# any peers. For example, to always directly forward requests for
# local servers ignoring any parents or siblings you may have use
# something like:
#
# acl local-servers dstdomain my.domain.net
# always_direct allow local-servers
#
# To always forward FTP requests directly, use
#
# acl FTP proto FTP
# always_direct allow FTP
#
# NOTE: There is a similar, but opposite option named
# 'never_direct'. You need to be aware that "always_direct deny
# foo" is NOT the same thing as "never_direct allow foo". You
# may need to use a deny rule to exclude a more-specific case of
# some other rule. Example:
#
# acl local-external dstdomain external.foo.net
# acl local-servers dstdomain .foo.net
# always_direct deny local-external
# always_direct allow local-servers
#
# NOTE: If your goal is to make the client forward the request
# directly to the origin server bypassing Squid then this needs
# to be done in the client configuration. Squid configuration
# can only tell Squid how Squid should fetch the object.
#
# NOTE: This directive is not related to caching. The replies
# is cached as usual even if you use always_direct. To not cache
# the replies see no_cache.
#
# This option replaces some v1.1 options such as local_domain
# and local_ip.
#
#Default:
# none

# TAG: never_direct
# Usage: never_direct allow|deny [!]aclname ...
#
# never_direct is the opposite of always_direct. Please read
# the description for always_direct if you have not already.
#
# With 'never_direct' you can use ACL elements to specify
# requests which should NEVER be forwarded directly to origin
# servers. For example, to force the use of a proxy for all
# requests, except those in your local domain use something like:
#
# acl local-servers dstdomain .foo.net
# acl all src 0.0.0.0/0.0.0.0
# never_direct deny local-servers
# never_direct allow all
#
# or if Squid is inside a firewall and there are local intranet
# servers inside the firewall use something like:
#
# acl local-intranet dstdomain .foo.net
# acl local-external dstdomain external.foo.net
# always_direct deny local-external
# always_direct allow local-intranet
# never_direct allow all
#
# This option replaces some v1.1 options such as inside_firewall
# and firewall_ip.
#
#Default:
# none


# ADVANCED NETWORKING OPTIONS
# -----------------------------------------------------------------------------

# TAG: max_filedescriptors
# The maximum number of filedescriptors supported.
#
# The default "0" means Squid inherits the current ulimit setting.
#
# Note: Changing this requires a restart of Squid. Also
# not all comm loops supports values larger than --with-maxfd.
#
#Default:
# max_filedescriptors 0

# TAG: accept_filter
# FreeBSD:
#
# The name of an accept(2) filter to install on Squid's
# listen socket(s). This feature is perhaps specific to
# FreeBSD and requires support in the kernel.
#
# The 'httpready' filter delays delivering new connections
# to Squid until a full HTTP request has been received.
# See the accf_http(9) man page for details.
#
# The 'dataready' filter delays delivering new connections
# to Squid until there is some data to process.
# See the accf_dataready(9) man page for details.
#
# Linux:
#
# The 'data' filter delays delivering of new connections
# to Squid until there is some data to process by TCP_ACCEPT_DEFER.
# You may optionally specify a number of seconds to wait by
# 'data=N' where N is the number of seconds. Defaults to 30
# if not specified. See the tcp(7) man page for details.
#EXAMPLE:
## FreeBSD
#accept_filter httpready
## Linux
#accept_filter data
#
#Default:
# none

# TAG: tcp_recv_bufsize (bytes)
# Size of receive buffer to set for TCP sockets. Probably just
# as easy to change your kernel's default. Set to zero to use
# the default buffer size.
#
#Default:
# tcp_recv_bufsize 0 bytes

# TAG: incoming_rate
# This directive controls how aggressive Squid should accept new
# connections compared to processing existing connections.
# The lower number the more frequent Squid will look for new
# incoming requests.
#
#Default:
# incoming_rate 30

# TAG: hosts_file
# Location of the host-local IP name-address associations
# database. Most Operating Systems have such a file on different
# default locations:
# - Un*X & Linux: /etc/hosts
# - Windows NT/2000: %SystemRoot%\system32\drivers\etc\hosts
# (%SystemRoot% value install default is c:\winnt)
# - Windows XP/2003: %SystemRoot%\system32\drivers\etc\hosts
# (%SystemRoot% value install default is c:\windows)
# - Windows 9x/Me: %windir%\hosts
# (%windir% value is usually c:\windows)
# - Cygwin: /etc/hosts
#
# The file contains newline-separated definitions, in the
# form ip_address_in_dotted_form name [name ...] names are
# whitespace-separated. Lines beginning with an hash (#)
# character are comments.
#
# The file is checked at startup and upon configuration.
# If set to 'none', it won't be checked.
# If append_domain is used, that domain will be added to
# domain-local (i.e. not containing any dot character) host
# definitions.
#
#Default:
# hosts_file /etc/hosts
#
hosts_file /etc/hosts

# TAG: uri_whitespace
# What to do with requests that have whitespace characters in the
# URI. Options:
#
# strip: The whitespace characters are stripped out of the URL.
# This is the behavior recommended by RFC2396.
# deny: The request is denied. The user receives an "Invalid
# Request" message.
# allow: The request is allowed and the URI is not changed. The
# whitespace characters remain in the URI. Note the
# whitespace is passed to redirector processes if they
# are in use.
# encode: The request is allowed and the whitespace characters are
# encoded according to RFC1738. This could be considered
# a violation of the HTTP/1.1
# RFC because proxies are not allowed to rewrite URI's.
# chop: The request is allowed and the URI is chopped at the
# first whitespace. This might also be considered a
# violation.
#
#Default:
# uri_whitespace strip

# TAG: coredump_dir
# By default Squid leaves core files in the directory from where
# it was started. If you set 'coredump_dir' to a directory
# that exists, Squid will chdir() to that directory at startup
# and coredump files will be left there.
#
#Default:
# coredump_dir none
#
# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
Mis Saludos.

Editado -- Lun Dic 12, 2011 11:10 am --

Bueno la solución a eso es añadir esta linea al conf
nonhierarchical_direct off
Mis Saludos
jcollective
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Re: Ayuda: Problema con navegacion de server Server squid [SOLUCIONADO]

Mensaje por jcollective » Sab Dic 17, 2011 7:07 pm

para q es esa linea, que es lo que hace, un poco mas de info, gracias
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Unix_Sendin
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Re: Ayuda: Problema con navegacion de server Server squid [SOLUCIONADO]

Mensaje por Unix_Sendin » Sab Dic 17, 2011 10:57 pm

Explicación del sitio squid-cache:
Por defecto, Squid dirigir sus peticiones no jerárquica
(que se corresponda hierarchy_stoplist o tipo de solicitud no cacheable) directo
a los servidores de origen.

Si se establece esta en off, Squid se prefiere enviar estos
solicita a los padres.

Tenga en cuenta que en la mayoría de configuraciones, haciendo de esto de que sólo
añadir latencia a estas solicitudes sin ningún tipo de mejora en éxito mundial
relación.

Si está dentro de un firewall en lugar de ver never_direct
esta directiva
En mis palabras: Sirve para que todas las peticiones que hagas a tu proxy sean enviadas atrás del cache_peer al proxy padre.

Mis Saludos Unix.
Responder
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