# WELCOME TO SQUID 2
# ------------------

# This is the default Squid Cnfiguration file. You may wish
# to look at http://cache.is.co.za/squid/ for documentation,
# or the Squid home page (http://squid.nlanr.net/) for the FAQ.

# The default Squid config file shows what the defaults for
# various options happen to be.  If you don't need to change the
# default, you shouldn't uncomment the line.  Doing so may cause
# run-time problems.  In some cases "none" refers to no default
# setting at all, whilst in other cases it refers to a valid
# option - the comments for that keyword indicate if this is the
# case.



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

# TAG: http_port
# The port number where Squid will listen for HTTP client
# requests.  Default is 3128, for httpd-accel mode use port 80.
# May be overridden with -a on the command line.

# You may specify multiple ports here, but they MUST all be on
# a single line.

http_port 8080

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

# icp_port 3130

# TAG: htcp_port
# The port number where Squid sends and receives ICP requests to
# and from neighbor caches.  Default is 4827.  To disable use
# "0".

# To enable this option, you must use --enable-htcp with the
# configure script.
# htcp_port 0

# TAG: mcast_groups
# This tag specifies a list of multicast groups which your server
# should join to receive multicasted ICP requests.

# 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.  NLANR has been
# assigned a block of multicast address space for use in Web
# Caching.  Plese write to us at nlanr-cache@nlanr.net to receive
# an address for your own use.

# If you are unsure about multicast, please read the Multicast
# chapter in the Squid FAQ (http://squid.nlanr.net/Squid/FAQ/).

# Usage: mcast_groups 239.128.16.128 224.0.1.20

# By default, Squid doesn't listen on any multicast groups.

# mcast_groups 239.128.16.128

# TAG: tcp_incoming_address
# TAG: tcp_outgoing_address
# TAG: udp_incoming_address
# TAG: udp_outgoing_address
# Usage: tcp_incoming_address 10.20.30.40
# udp_outgoing_address fully.qualified.domain.name

# tcp_incoming_address   is used for the HTTP socket which accepts
# connections from clients and other caches.
# tcp_outgoing_address   is used for connections made to remote
# servers and other caches.
# udp_incoming_address   is used for the ICP socket receiving packets
# from other caches.
# udp_outgoing_address   is used for ICP packets sent out to other
# caches.

# The default behaviour is to not bind to any specific address.

# NOTE, udp_incoming_address and udp_outgoing_address can not
# have the same value (unless it is 0.0.0.0) since they both use
# port 3130.

# tcp_incoming_address 0.0.0.0
# tcp_outgoing_address 0.0.0.0
# udp_incoming_address 0.0.0.0
# udp_outgoing_address 0.0.0.0


# OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
# -----------------------------------------------------------------------------

# TAG: cache_peer
# To specify other caches in a hierarchy, use the format:

# hostname type http_port icp_port

# For example,

# #                                        proxy  icp
# #          hostname             type     port   port  options
# #          -------------------- -------- ----- -----  -----------
# cache_peer parent.foo.net       parent    3128  3130  [proxy-only]
# cache_peer sib1.foo.net         sibling   3128  3130  [proxy-only]
# cache_peer sib2.foo.net         sibling   3128  3130  [proxy-only]

# type:  either 'parent', 'sibling', or 'multicast'.

# proxy_port:  The port number where the cache listens for proxy
# requests.

# icp_port:  Used for querying neighbor caches about
# objects.  To have a non-ICP neighbor
# specify '7' for the ICP port and make sure the
# neighbor machine has the UDP echo port
# enabled in its /etc/inetd.conf file.

# options: proxy-only
# weight=n
# ttl=n
# no-query
# default
# round-robin
# multicast-responder
# closest-only
# no-digest
# no-netdb-exchange
# no-delay
# login=user:password

# use 'proxy-only' to specify that objects fetched
# from this cache should not be saved locally.

# use 'weight=n' to specify a weighted parent.
# The weight must be an integer.  The default weight
# is 1, larger weights are favored more.

# use 'ttl=n' to specify a IP multicast TTL to use
# when sending an ICP request to this address.
# Only useful when sending to a multicast group.
# Because we don't accept ICP replies from random
# hosts, you must configure other group members as
# peers with the 'multicast-responder' option below.

# use 'no-query' to NOT send ICP queries to this
# neighbor.

# use 'default' if this is a parent cache which can
# be used as a "last-resort." You should probably
# only use 'default' in situations where you cannot
# use ICP with your parent cache(s).

# use 'round-robin' to define a set of parents which
# should be used in a round-robin fashion in the
# absence of any ICP queries.

# 'multicast-responder' indicates that the named peer
# is a member of a multicast group.  ICP queries will
# not be sent directly to the peer, but ICP replies
# will be accepted from it.

# 'closest-only' indicates that, for ICP_OP_MISS
# replies, we'll only forward CLOSEST_PARENT_MISSes
# and never FIRST_PARENT_MISSes.

# use 'no-digest' to NOT request cache digests from
# this neighbor.

# 'no-netdb-exchange' disables requesting ICMP
# RTT database (NetDB) from the neighbor.

# use 'no-delay' to prevent access to this neighbor
# from influencing the delay pools.

# use 'login=user:password' if this is a personal/workgroup
# proxy and your parent requires proxy authentication.

# NOTE: non-ICP neighbors must be specified as 'parent'.

# cache_peer hostname type 3128 3130

# 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 domainname
# with '!' means that 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.

# TAG: neighbor_type_domain
# usage: neighbor_type_domain 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  parent cache.foo.org 3128 3130
# neighbor_type_domain cache.foo.org sibling .com .net
# neighbor_type_domain cache.foo.org sibling .au .de

# 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

# icp_query_timeout 0

# 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.

# mcast_icp_query_timeout 2000

# 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.

# 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.

# The default is to directly fetch URLs containing 'cgi-bin' or '?'.

# hierarchy_stoplist cgi-bin ?

# TAG: no_cache
# A list of ACL elements which, if matched, cause the reply to
# immediately removed from the cache.  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.

# There is no default.  We recommend you uncomment the following
# two lines.

# acl QUERY urlpath_regex cgi-bin \?
# no_cache deny QUERY


# OPTIONS WHICH AFFECT THE CACHE SIZE
# -----------------------------------------------------------------------------

# TAG: cache_mem   (bytes)
# NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS
# SIZE.  IT PLACES A LIMIT ON ONE ASPECT OF SQUID'S MEMORY
# USAGE.  SQUID USES MEMORY FOR OTHER THINGS AS WELL.
# YOUR PROCESS WILL PROBABLY BECOME TWICE OR THREE TIMES
# BIGGER THAN THE VALUE YOU PUT HERE

# '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.

# The values of cache_mem_low and cache_mem_high (below) can be
# used to tune the use of the memory pool.  When the high mark is
# reached, in-transit and hot objects will be released to clear
# space.  When an object transfer is completed, it will remain in
# memory only if the current memory usage is below the low water
# mark.

# The default is 8 Megabytes.

cache_mem 64 MB

# TAG: cache_swap_low   (percent, 0-100)
# TAG: cache_swap_high   (percent, 0-100)
# The low- and high-water marks for cache LRU replacement.  LRU
# replacement begins when the high-water mark is reached and ends
# when enough objects have been removed and the low-water mark is
# reached. 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.

# cache_swap_low  90
# cache_swap_high 95

# 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.

maximum_object_size 20000 KB

# TAG: ipcache_size   (number of entries)
# TAG: ipcache_low   (percent)
# TAG: ipcache_high   (percent)
# The size, low-, and high-water marks for the IP cache.

# ipcache_size 1024
# ipcache_low  90
# ipcache_high 95

# TAG: fqdncache_size   (number of entries)
# Maximum number of FQDN cache entries.
# fqdncache_size 1024


# LOGFILE PATHNAMES AND CACHE DIRECTORIES
# -----------------------------------------------------------------------------

# TAG: cache_dir
# Usage:

# cache_dir Directory-Name Mbytes Level-1 Level2

# You can specify multiple cache_dir lines to spread the
# cache among different disk partitions.

# 'Directory' is a top-level directory where cache swap
# files will be stored.  If you want to use an entire disk
# for caching, then 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.

# If no 'cache_dir' lines are specified, the following
# default will be used: /var/spool/squid.

# 'Mbytes' is the amount of disk space (MB) to use under this
# directory.  The default is 100 MB.  Change this to suit your
# configuration.

# '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.

cache_dir ufs /var/spool/squid 1124 64 128 

# TAG: cache_access_log
# Logs the client request activity.  Contains an entry for
# every HTTP and ICP request received.

cache_access_log /var/log/squid/access.log

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

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 analyse this data, so you can safely
# disable it.

# cache_store_log /var/log/squid/store.log

# TAG: cache_swap_log
# Location for the cache "swap.log."  This log file holds the
# metadata of objects saved on disk.  It is used to rebuild the
# cache during startup.  Normally this file resides in the first
# '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 you have more than one 'cache_dir', 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, then these log files will NOT correspond to
# the correct 'cache_dir' entry (unless you manually rename
# them).  We recommend that you do NOT use this option.  It is
# better to keep these log files in each 'cache_dir' directory.

# cache_swap_log

# 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 that Squid-specific log analysers use.

# emulate_httpd_log off

# 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.

# mime_table /usr/lib/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'.

# log_mime_hdrs off

# TAG: useragent_log
# If configured with the "--enable-useragent_log" configure
# option, Squid will write the User-Agent field from HTTP
# requests to the filename specified here.  By default
# useragent_log is disabled.

# useragent_log none

# TAG: pid_filename
# A filename to write the process-id to.  To disable, enter "none".

# 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".

# 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.

# 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'.

# client_netmask 255.255.255.255


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

# 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
# resonable for your domain, like wwwuser@somewhere.net

# The reason why this is domainless by default is that 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 that the email address is valid
# (for example perl.com).

# 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.

# ftp_list_width 32

# TAG: cache_dns_program
# Specify the location of the executable for dnslookup process.

# cache_dns_program /usr/lib/squid/dnsserver

# TAG: dns_children
# The number of processes spawn to service DNS name lookups.
# For heavily loaded caches on large servers, you should
# probably increase this value to at least 10.  The maximum
# is 32.  The default is 5.

# dns_children 5

# TAG: dns_defnames   on|off
# Normally the 'dnsserver' disables the RES_DEFNAMES resolver
# option (see res_init(3)).  This prevents caches in a hierarchy
# from interpreting single-component hostnames locally.  To allow
# dnsserver to handle single-component names, enable this
# option.

# dns_defnames off

# TAG: dns_nameservers
# Use this if you want to specify a list of DNS name servers
# (IP addresses) to use instead of those given in your
# /etc/resolv.conf file.

# Example: dns_nameservers 10.0.0.1 192.172.0.4

# dns_nameservers none

# TAG: unlinkd_program
# Specify the location of the executable for file deletion process.
# This isn't needed if you are using async-io since it's handled by
# a thread.

# unlinkd_program /usr/lib/squid/unlinkd

# TAG: pinger_program
# Specify the location of the executable for the pinger process.
# This is only useful if you configured Squid (during compliation)
# with the '--enable-icmp' option.

# pinger_program /usr/lib/squid/pinger

# TAG: redirect_program
# Specify the location of the executable for the URL redirector.
# Since they can perform almost any function there isn't one included.
# See the Release-Notes for information on how to write one.
# By default, a redirector is not used.

# redirect_program none

# TAG: redirect_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.

# redirect_children 5

# TAG: redirect_rewrites_host_header
# By default Squid rewrites any Host: header in redirected requests.
# If you are running a accelerator then this may not be a wanted effect
# of a redirector.
# redirect_rewrites_host_header on

# TAG: authenticate_program
# Specify the command for the external authenticator.  Such a
# program reads a line containing "username password" and replies
# "OK" or "ERR" in an endless loop.  If you use an authenticator,
# make sure you have 1 acl of type proxy_auth.  By default, the
# authenticator_program is not used.

# If you want to use the traditional proxy authentication,
# jump over to the ../auth_modules/NCSA directory and
# type:
# % make
# % make install

# Then, set this line to something like

# authenticate_program /usr/bin/ncsa_auth /usr/etc/passwd

# authenticate_program none

# TAG: authenticate_children
# The number of authenticator processes to spawn (default 5). If you
# start too few Squid will have to wait for them to process a backlog
# of usercode/password verifications, slowing it down. When password
# verifications are done via a (slow) network you are likely to need
# lots of authenticator processes.

# authenticate_children 5

# TAG: authenticate_ttl
# The time a checked username/password combination remains cached
# (default 3600). If a wrong password is given for a cached user,
# the user gets removed FROM the username/password cache forcing
# a revalidation.

# authenticate_ttl 3600


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

# TAG: wais_relay_host
# TAG: wais_relay_port
# Relay WAIS request to host (1st arg) at port (2 arg).

# wais_relay_host localhost
# wais_relay_port 8000

# TAG: request_size   (KB)
# Maximum allowed request size in kilobytes.  If people are using
# POST to upload files, then set this to the largest acceptable
# filesize plus a few extra kbytes.

# request_size 100 KB

# 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 and max are specified in MINUTES.
# percent is an integer number.

# options: override-expire
# override-lastmod
# reload-into-ims
# ignore-reload

# override-expire enforces min age even if the server
# sent a Expires: header. 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 was 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.

# Please see the file doc/Release-Notes-1.1.txt for a full
# description of Squid's refresh algorithm.  Basically a
# cached object is: (the order is changed from 1.1.X)

# 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, then the default will be used.

# Default:
# refresh_pattern      ^ftp:      1440   20%   10080
# refresh_pattern      ^gopher:   1440   0%   1440
# refresh_pattern    .      0   20%   4320

# TAG: reference_age
# As a part of normal operation, Squid performs Least Recently
# Used removal of cached objects.  The LRU age for removal is
# computed dynamically, based on the amount of disk space in
# use.  The dynamic value can be seen in the Cache Manager 'info'
# output.

# The 'reference_age' parameter defines the maximum LRU age.  For
# example, setting reference_age to '1 week' will cause objects
# to be removed if they have not been accessed for a week or
# more.  The default value is one month.

# Specify a number here, followed by units of time.  For example:
# 1 week
# 3.5 days
# 4 months
# 2.2 hours

# reference_age 1 month

# TAG: quick_abort_min   (KB)
# TAG: quick_abort_max   (KB)
# TAG: quick_abort_pct   (percent)
# The cache can be configured to continue downloading aborted
# requests.  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.  Setting 'quick_abort_min' to -1
# will disable the quick_abort feature.

# 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.

# quick_abort_min 16 KB
# quick_abort_max 16 KB
# quick_abort_pct 95

# 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.

# negative_ttl 5 minutes

# TAG: positive_dns_ttl   time-units
# Time-to-Live (TTL) for positive caching of successful DNS lookups.
# Default is 6 hours (360 minutes).  If you want to minimize the
# use of Squid's ipcache, set this to 1, not 0.

# positive_dns_ttl 6 hours

# TAG: negative_dns_ttl   time-units
# Time-to-Live (TTL) for negative caching of failed DNS lookups.

# negative_dns_ttl 5 minutes

# 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 then 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 that it may cache the result. (2.0 style)

# A value of 0 causes Squid to never fetch more than the client
# client requested. (default)

# range_offset_limit 0 KB


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

# TAG: connect_timeout   time-units
# Some systems (notably Linux) can not be relied upon to properly
# time out connect(2) requests.  Therefore the Squid process
# enforces its own timeout on server connections.  This parameter
# specifies how long to wait for the connect to complete.  The
# default is two minutes (120 seconds).

# connect_timeout 120 seconds

# TAG: siteselect_timeout   time-units
# For URN to multiple URL's URL selection

# siteselect_timeout 4 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.

# read_timeout 15 minutes

# TAG: request_timeout
# How long to wait for an HTTP request after connection
# establishment.  For persistent connections, wait this long
# after the previous request completes.

# request_timeout 30 seconds

# TAG: client_lifetime   time-units
# The maximum amount of time that a client (browser) is allowed to
# remain connected to the cache process.  This protects the Cache
# from having alot 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, pconn_timeout and quick_abort values.

# 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."

# half_closed_clients on

# TAG: pconn_timeout
# Timeout for idle persistent connections to servers and other
# proxies.
# pconn_timeout 120 seconds

# TAG: ident_timeout
# Maximum time to wait for IDENT requests.  If this is too high,
# and you enabled 'ident_lookup', then you might be susceptible
# to denial-of-service by having many ident requests going at
# once.

# This option may be disabled by using --disable-ident with
# the configure script.
# 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.

# shutdown_lifetime 30 seconds


# ACCESS CONTROLS
# -----------------------------------------------------------------------------

# TAG: acl
# Defining an Access List

# acl aclname acltype string1 ...
# acl aclname acltype "file" ...

# when using "file", the file should contain one item per line

# acltype is one of src dst srcdomain dstdomain url_pattern
# urlpath_pattern time port proto method browser user

# By default, regular expressions are CASE-SENSITIVE.  To make
# them case-insensitive, use the -i option.

# acl aclname src      ip-address/netmask ... (clients IP address)
# acl aclname src      addr1-addr2/netmask ... (range of addresses)
# acl aclname dst      ip-address/netmask ... (URL host's IP address)
# acl aclname myip     ip-address/netmask ... (local socket IP address)

# acl aclname srcdomain   foo.com ...     # reverse lookup, client IP
# acl aclname dstdomain   foo.com ...     # Destination server from URL
# acl aclname srcdom_regex [-i] xxx ...   # regex matching client name
# acl aclname dstdom_regex [-i] xxx ...   # regex matching server
# # For dstdomain and dstdom_regex  a reverse lookup is tried if a IP
# # based URL is used. The name "none" is used if the reverse lookup
# # fails.

# acl aclname time     [day-abbrevs]  [h1:m1-h2:m2]
# day-abbrevs:
# S - Sunday
# M - Monday
# T - Tuesday
# W - Wednesday
# H - Thursday
# F - Friday
# A - Saturday
# h1:m1 must be less than h2:m2
# acl aclname url_regex [-i] ^http:// ...   # regex matching on whole URL
# acl aclname urlpath_regex [-i] \.gif$ ...   # regex matching on URL path
# acl aclname port     80 70 21 ...
# acl aclname port     0-1024 ...      # ranges allowed
# acl aclname proto    HTTP FTP ...
# acl aclname method   GET POST ...
# acl aclname browser  [-i] regexp
# # pattern match on User-Agent header
# acl aclname ident    username ...
# # string match on ident output.
# # use REQUIRED to accept any non-null ident.
# acl aclname src_as   number ...
# acl aclname dst_as   number ...
# # Except for access control, AS numbers can be used for
# # routing of requests to specific caches. Here's an
# # example for routing all requests for AS#1241 and only
# # those to mycache.mydomain.net:
# # acl asexample dst_as 1241
# # cache_peer_access mycache.mydomain.net allow asexample
# # cache_peer_access mycache_mydomain.net deny all

# acl aclname proxy_auth username ...
# # list of valid usernames
# # use REQUIRED to accept any valid username.
# #
# # NOTE: when a Proxy-Authentication header is sent but it is not
# # needed during ACL checking the username is NOT logged
# # in access.log.
# #
# # NOTE: proxy_auth requires a EXTERNAL authentication program
# # to check username/password combinations (see
# # authenticate_program).
# #
# # WARNING: proxy_auth can't be used in a transparent proxy. It
# # collides with any authentication done by origin servers. It may
# # seem like it works at first, but it doesn't.

# acl aclname snmp_community string ...
# # A community string to limit access to your SNMP Agent
# # Example:
# #
# #   acl snmppublic snmp_community public


# Examples:
# acl myexample dst_as 1241
# acl password proxy_auth REQUIRED

# Defaults:
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl SSL_ports port 443 563
acl Safe_ports port 80 21 443 563 70 210 1025-65535
acl purge method PURGE
acl CONNECT method CONNECT

acl sitesproibidos url_regex -i "/etc/squid/sitesproibidos"
acl palavrasproibidas urlpath_regex -i "/etc/squid/palavrasproibidas" 
acl sitespermitidos url_regex -i "/etc/squid/sitespermitidos"
acl palavraspermitidas url_regex -i "/etc/squid/palavraspermitidas"
# acl maquina src cabiunas.dominio.sermap.com.br 

acl superusuarios      ident "/etc/squid/superusuarios"
acl usuariosnormais    ident "/etc/squid/usuariosnormais" 

acl marcelo      ident marcelo

# Os usuarios nao mencionados em superusuarios e usuariosnormais sao considerado# considerados usuarios restritos e so poderao acessar os sitespermitidos.
 
# TAG: http_access
# Allowing or Denying access based on defined access lists

# Access to the HTTP port:
# http_access allow|deny [!]aclname ...

# Access to the ICP port:
# icp_access  allow|deny [!]aclname ...

# NOTE on default values:

# If there are no "access" lines present, the default is to allow
# 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, then 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 configuration:
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS

# http_access allow maquina
http_access allow superusuarios 
http_access allow sitespermitidos
http_access deny sitesproibidos
http_access allow palavraspermitidas
http_access deny palavrasproibidas
http_access allow usuariosnormais 
#http_access allow all
http_access deny all

# TAG: icp_access
# Reply to all ICP queries we receive

icp_access allow all

# TAG: miss_access
# Use to force your neighbors to use you as a sibling instead of
# a parent.  For example:

# acl localclients src 172.16.0.0/16
# miss_access allow localclients
# miss_access deny  !localclients

# This means that only your local clients are allowed to fetch
# MISSES and all other clients can only fetch HITS.

# By default, allow all clients who passed the http_access rules
# to fetch MISSES from us.
miss_access allow all
httpd_accel_with_proxy off
httpd_accel_port 80

# 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://squid.nlanr.net/Squid/FAQ/FAQ-10.html).

# TAG: proxy_auth_realm
# Specifies the realm name which is to be reported to the client for
# proxy authentication (part of the text the user will see when
# prompted their username and password).

# proxy_auth_realm Squid proxy-caching web server

# TAG: ident_lookup_access
# A list of ACL elements which, if matched, cause an ident
# (RFC 931) lookup to be performed for this request.  For
# example, you might choose to always perform ident lookups
# for your main multi-user Unix boxes, but not for your Macs
# and PCs.  By default, ident lookups are not performed for
# any requests.

# To enable ident lookups for specific client addresses, you
# can follow this example:

# acl ident_aware_hosts src 198.168.1.0/255.255.255.0
# ident_lookup_access allow ident_aware_hosts
# ident_lookup_access deny all

# This option may be disabled by using --disable-ident with
# the configure script.
# ident_lookup_access deny all


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

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

cache_mgr wberbert

# TAG: cacHE_effective_user
# TAG: cache_effective_group

# If the cache is run as root, it will change its effective/real
# UID/GID to the UID/GID specified below.  The default is to
# change to UID to nobody and GID to nogroup.

# If Squid is not started as root, the default is to keep the
# current UID/GID.  Note that if Squid is not started as root then
# you cannot set http_port to a value lower than 1024.

# cache_effective_user proxy
# cache_effective_group proxy

# TAG: visible_hostname
# If you want to present a special hostname in error messages, etc,
# then 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.

# visible_hostname www-cache.foo.org

# TAG: unique_hostname
# If you want to have multiple machines with the same
# 'visible_hostname' then you must give each machine a different
# 'unique_hostname' so that forwarding loops can be detected.

# unique_hostname www-cache1.foo.org


# 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 annoucement 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://ircache.nlanr.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.

# 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.

# announce_host tracker.ircache.net
# announce_port 3131


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

# TAG: httpd_accel_host
# TAG: httpd_accel_port
# If you want to run Squid as an httpd accelerator, define the
# host name and port number where the real HTTP server is.

# If you want virtual host support then specify the hostname
# as "virtual".

# NOTE: enabling httpd_accel_host disables proxy-caching and
# ICP.  If you want these features enabled also, then set
# the 'httpd_accel_with_proxy' option.

# httpd_accel_host hostname
# httpd_accel_port port

# TAG: httpd_accel_with_proxy   on|off
# If you want to use Squid as both a local httpd accelerator
# and as a proxy, change this to 'on'.

# httpd_accel_with_proxy off

# TAG: httpd_accel_uses_host_header   on|off
# HTTP/1.1 requests include a Host: header which is basically the
# hostname from the URL.  Squid can be an accelerator for
# different HTTP servers by looking at this header.  However,
# Squid does NOT check the value of the Host header, so it opens
# a big security hole.  We recommend that this option remain
# disabled unless you are sure of what you are doing.

# However, you will need to enable this option if you run Squid
# as a transparent proxy.  Otherwise, virtual servers which
# require the Host: header will not be properly cached.
# httpd_accel_uses_host_header off


# MISCELLANEOUS
# -----------------------------------------------------------------------------

# TAG: dns_testnames
# The DNS tests exit as soon as the first site is successfully looked up

# If you want to disable DNS tests, do not comment out or delete this
# list.  Instead use the -D command line option

# dns_testnames netscape.com internic.net nlanr.net microsoft.com

# 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 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>'.

# logfile_rotate 0

# TAG: append_domain
# Appends local domain name to hostnames without any dots in
# them.  append_domain must begin with a period.

# append_domain .yourdomain.com

# 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.

# tcp_recv_bufsize 0 bytes

# 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.
# err_html_text

# TAG: deny_info
# Usage:   deny_info err_page_name 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.  A single ACL will cause
# the http_access check to fail.  If a 'deny_info' line exists
# for that ACL then Squid returns a corresponding error page.

# You may use ERR_ pages that come with Squid or create your own pages
# and put them into the configured errors/ directory.

# TAG: memory_pools   on|off
# If set, Squid will keep pools of allocated (but unused) memory
# available for future use.  If memory is a premium on your
# system and you believe your malloc library outperforms Squid
# routines, disable this.

# memory_pools on

# TAG: memory_pools_limit   (bytes)
# Used only with memory_pools on:
# memory_pools_limit 50 MB

# If set to a non-zero value, Squid will keep at most the specified
# limit of allocated (but unused) memory in memory pools. All free()
# requests that exceed this limit will be handled by your malloc
# library. Squid does not pre-allocate any memory, just safe-keeps
# objects that otherwise would be free()d. Thus, it is safe to set
# memory_pools_limit to a reasonably high value even if your
# configuration will use less memory.

# If not set (default) or set to zero, Squid will keep all memory it
# can. That is, there will be no limit on the total amount of memory
# used for safe-keeping.

# To disable memory allocation optimization, do not set
# memory_pools_limit to 0. Set memory_pools to "off" instead.

# An overhead for maintaining memory pools is not taken into account
# when the limit is checked. This overhead is close to four bytes per
# object kept. However, pools may actually _save_ memory because of
# reduced memory thrashing in your malloc library.

# TAG: forwarded_for   on|off
# If set, Squid will include your system's IP address or name
# in the HTTP requests it forwards.  By default it looks like
# this:

# X-Forwarded-For: 192.1.2.3

# If you disable this, it will appear as

# X-Forwarded-For: unknown

# forwarded_for on

# 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.

# log_icp_queries on

# 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, then
# it is probably okay to set this to 'on'.

# 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.

# minimum_direct_hops 4

# TAG: cachemgr_passwd
# Specify passwords for cachemgr operations.

# Usage: cachemgr_passwd password action action ...

# Some valid actions are (see cache manager menu for a full list):
# 5min
# 60min
# asndb
# authenticator
# cbdata
# client_list
# comm_incoming
# config *
# counters
# delay
# digest_stats
# dns
# events
# filedescriptors
# fqdncache
# histograms
# http_headers
# info
# io
# ipcache
# mem
# menu
# netdb
# non_peers
# objects
# pconn
# peer_select
# redirector
# refresh
# server_list
# shutdown *
# store_digest
# storedir
# utilization
# via_headers
# vm_objects

# * Indicates actions which will not be performed without a
# valid password, others can be performed if not listed here.

# To disable an action, set the password to "disable".
# To allow performing an action without a password, set the
# password to "none".

# Use the keyword "all" to set the same password for all actions.

# cachemgr_passwd secret shutdown
# cachemgr_passwd lesssssssecret info stats/objects
# cachemgr_passwd disable all

# TAG: store_avg_object_size   (kbytes)
# Average object size, used to estimate number of objects your
# cache can hold.  See doc/Release-Notes-1.1.txt.  The default is
# 13 KB.

# 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.

# store_objects_per_bucket 50

# TAG: client_db   on|off
# If you want to disable collecting per-client statistics, then
# turn off client_db here.

# client_db on

# 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.

# 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.

# 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' then that peer will send ICMP pings to origin server
# sites of the URLs it receives.  If you enable this option then 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.

# 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.

# test_reachability off

# TAG: buffered_logs   on|off
# Some log files (cache.log, useragent.log) are written with
# stdio functions, and as such they can be buffered or
# unbuffered.  By default they will be unbuffered. Buffering them
# can speed up the writing slightly (though you are unlikely to
# need to worry).
# buffered_logs off

# TAG: reload_into_ims   on|off
# When you enable this option, client no-cache or ``reload''
# requests will be changed to If-Modified-Since requests.
# Doing this VIOLATES the HTTP standard.  Enabling this
# feature could make you liable for problems which it
# causes.

# see also refresh_pattern for a more selective approach.

# This option may be disabled by using --disable-http-violations
# with the configure script.
# reload_into_ims off

# TAG: always_direct
# Usage: always_direct allow|deny [!]aclname ...

# Here you can use ACL elements to specify requests which should
# ALWAYS be forwarded directly to origin servers.  For example,
# to always directly forward requests for local servers 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

# This option replaces some v1.1 options such as local_domain
# and local_ip.

# 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 is local intranet
# servers inside the firewall then 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.

# TAG: anonymize_headers
# Usage: anonymize_headers allow|deny header_name ...

# This option replaces the old 'http_anonymizer' option with
# something that is much more configurable.  You may now
# specify exactly which headers are to be allowed, or which
# are to be removed from outgoing requests.

# There are two methods of using this option.  You may either
# allow specific headers (thus denying all others), or you
# may deny specific headers (thus allowing all others).

# For example, to achieve the same behaviour as the old
# 'http_anonymizer standard' option, you should use:

# anonymize_headers deny From Referer Server
# anonymize_headers deny User-Agent WWW-Authenticate Link

# Or, to reproduce the old 'http_anonymizer paranoid' feature
# you should use:

# anonymize_headers allow Allow Authorization Cache-Control
# anonymize_headers allow Content-Encoding Content-Length
# anonymize_headers allow Content-Type Date Expires Host
# anonymize_headers allow If-Modified-Since Last-Modified
# anonymize_headers allow Location Pragma Accept Charset
# anonymize_headers allow Accept-Encoding Accept-Language
# anonymize_headers allow Content-Language Mime-Version
# anonymize_headers allow Retry-After Title Connection
# anonymize_headers allow Proxy-Connection

# NOTE: You can not mix "allow" and "deny".  All 'anonymize_headers'
# lines must have the same second argument.

# By default, all headers are allowed (no anonymizing is
# performed).

# anonymize_headers

# TAG: fake_user_agent
# If you filter the User-Agent header with 'anonymize_headers' it
# may cause some Web servers to refuse your request.  Use this to
# fake one up.  For example:

# fake_user_agent Nutscrape/1.0 (CP/M; 8-bit)
# (credit to Paul Southworth pauls@etext.org for this one!)

# fake_user_agent none

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

# TAG: error_directory
# If you wish to create your own versions of the default
# (English) error files, either to customise them to suit your
# language or company copy the template english files to another
# directory and point this tag at them.
error_directory /usr/lib/squid/errors/Portuguese

# TAG: minimum_retry_timeout   (seconds)
# This specifies the minimum connect timeout, for when the
# connect timeout is reduced to compensate for the availability
# of multiple IP addresses.

# When a connection to a host is initiated, and that host has
# several IP addresses, the default connection timeout is reduced
# by dividing it by the number of addresses.  So, a site with 15
# addresses would then have a timeout of 8 seconds for each
# address attempted.  To avoid having the timeout reduced to the
# point where even a working host would not have a chance to
# respond, this setting is provided.  The default, and the
# minimum value, is five seconds, and the maximum value is sixty
# seconds, or half of connect_timeout, whichever is greater and
# less than connect_timeout.

# minimum_retry_timeout 5 seconds

# TAG: maximum_single_addr_tries
# This sets the maximum number of connection attempts for a
# host that only has one address (for multiple-address hosts,
# each address is tried once).

# The default value is three tries, the (not recommended)
# maximum is 255 tries.  A warning message will be generated
# if it is set to a value greater than ten.

# maximum_single_addr_tries 3

# 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 '-1'.

# NOTE: SNMP support requires use the --enable-snmp configure
# command line option.
# snmp_port -1

# TAG: forward_snmpd_port
# This configures whether we should be forwarding SNMP requests
# to another snmpd. The reason for putting this piece of
# functionality into Squid was to enable access to the system's
# installed snmpd with minimal changes.  This option is turned
# off by default, check with your /etc/services for your system's
# snmp port (usually 161).  We do not use getservbyname() to
# allow you to set Squid into port 161 and your system's snmpd to
# another port by changing /etc/services.

# WARNING: Because of Squid acting as a proxy snmpd for system
# you have to do security checks on THIS snmpd for all objects.
# Check your snmp_config_file.
# forward_snmpd_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 public localhost
# 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 behaviour is to not bind to any specific address.

# NOTE, snmp_incoming_address and snmp_outgoing_address can not have
# the same value since they both use port 3130.

# snmp_incoming_address 0.0.0.0
# snmp_outgoing_address 0.0.0.0

# TAG: as_whois_server
# WHOIS server to query for AS numbers.  NOTE: AS numbers are
# queried only when Squid starts up, not for every request.


# DELAY POOL PARAMETERS (all require DELAY_POOLS compilation option)
# -----------------------------------------------------------------------------

# 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.

# To enable this option, you must use --enable-delay-pools with the
# configure script.
# 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:

# 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"

# TAG: delay_access
# This is used to determine which delay pool a request falls into.
# The first matched delay pool is always used, ie, if a request falls
# into delay pool number one, no more delay are checked, otherwise the
# rest are checked in order of their delay pool number until they have
# all been checked.  For example, if you want some_big_clients in delay
# pool 1 and lotsa_little_clients in delay pool 2:

# delay_access 1 allow some_big_clients
# delay_access 1 deny all
# delay_access 2 allow lotsa_little_clients
# delay_access 2 deny all

# 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 600/64000

# There must be one delay_parameters line for each delay pool.

# 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).

# delay_initial_bucket_level 50

# TAG: incoming_icp_average
# TAG: incoming_http_average
# TAG: min_icp_poll_cnt
# TAG: min_http_poll_cnt
# Heavy voodoo here.  I can't even believe you are reading this.
# Are you crazy?  Don't even think about adjusting these unless
# you understand the algorithms in comm_select.c first!

# incoming_icp_average 6
# incoming_http_average 4
# min_icp_poll_cnt 8
# min_http_poll_cnt 8

# TAG: max_open_disk_fds
# TAG: offline_mode
# Enable this option and Squid will never try to validate cached
# objects.

# TAG: uri_whitespace
# What to do with requests that have whitespace characters in the
# URI.  Options:

# 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.
# uri_wh

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