#       Esta é uma configuração básica
#   WELCOME TO SQUID 2
#   ------------------
#
#   This is the default Squid configuration file. You may wish
#   to look at the Squid home page (http://www.squid-cache.org/)
#   for the FAQ and other documentation.
#
#   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, while 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
#   Usage:   port
#      hostname:port
#      1.2.3.4:port
#
#   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, then 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.
#
#   The default port number is 3128.
#
#   If you are running Squid in accelerator mode, then you
#   probably want to listen on port 80 also, or instead.
#
#   The -a command line option will override the *first* port
#   number listed here.   That option will NOT override an IP
#   address, however.
#
#   You may specify multiple socket addresses on multiple lines.
#
#Default:
http_port 80

#  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.  Default is 4827.  To disable use
#   "0".
#
#   To enable this option, you must use --enable-htcp with the
#   configure script.
#
#Default:
# htcp_port 4827

#  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: 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_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 behavior is to not bind to any specific address.
#
#   A *_incoming_address value of 0.0.0.0 indicates that Squid should
#   listen on all available interfaces.
#
#   If udp_outgoing_address is set to 255.255.255.255 (the default)
#   then it will use the same socket as udp_incoming_address. Only
#   change this if you want to have ICP queries sent using another
#   address than where this Squid listens for ICP queries from other
#   caches.
#
#   NOTE, udp_incoming_address and udp_outgoing_address can not
#   have the same value since they both use port 3130.
#
#   NOTE, tcp_incoming_address has been removed.  You can now
#   specify IP addresses on the 'http_port' line.
#
#Default:
# tcp_outgoing_address 255.255.255.255
# udp_incoming_address 0.0.0.0
# udp_outgoing_address 255.255.255.255


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

#  TAG: cache_peer
#   To specify other caches in a hierarchy, use the format:
#
#      cache_peer 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
#           connect-timeout=nn
#           digest-url=url
#           allow-miss
#
#           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 queries 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.
#
#           use 'connect-timeout=nn' to specify a peer
#           specific connect timeout (also see the
#           peer_connect_timeout directive)
#
#           use 'digest-url=url' to tell Squid to fetch the cache
#           digest (if digests are enabled) for this host from
#           the specified URL rather than the Squid default
#           location.
#
#           use 'allow-miss' to disable Squid's use of only-if-cached
#           when forwarding requests to siblings. This is primarily
#           useful when icp_hit_stale is used by the sibling. To
#           extensive use of this option may result in forwarding
#           loops, and you should avoid having two-way peerings
#           with this option. (for example to deny peer usage on
#           requests from peer by denying cache_peer_access if the
#           source is a peer)
#
#   NOTE: non-ICP neighbors must be specified as 'parent'.
#
#Default:
# none

#  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.
#
#Default:
# none

#  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
#
#Default:
# none

#  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: 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

#  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.
#
#We recommend you to use at least the following line.
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.
#
#We recommend you to use 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.
#
#Default:
# 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 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: 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.
#
#Default:
maximum_object_size 4096 KB

#  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_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: ipcache_size   (number of entries)
#  TAG: ipcache_low   (percent)
#  TAG: ipcache_high   (percent)
#   The size, low-, and high-water marks for the IP cache.
#
#Default:
# ipcache_size 1024
# ipcache_low 90
# ipcache_high 95

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

#  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/techreports/98/HPL-98-173.html.
#
#Default:
# cache_replacement_policy lru

#  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


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

#  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.  Most
#   everyone will want to use "ufs" as the type.  If you are using
#   Async I/O (--enable async-io) on Linux or Solaris, then you may
#   want to try "aufs" as the type.  Async IO support may be
#   buggy, however, so beware.
#
#   '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.
#
#   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.
#
#   '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 recevies some replies. Default is 72
#
#   Common options:
#
#   read-only, this cache_dir is read only.
#
#   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.
#
#Default:
# cache_dir ufs /var/cache/squid 100 16 256

#  TAG: cache_access_log
#   Logs the client request activity.  Contains an entry for
#   every HTTP and ICP queries received.
#
#Default:
# cache_access_log /var/log/squid/access.log

#  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_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 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 then 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
#   then 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.
#
#Default:
# none

#  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 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 /etc/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
# Note: This option is only available if Squid is rebuilt with the
#       --enable-useragent-log option
#
#   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
# Note: This option is only available if Squid is rebuilt with the
#       --enable-referer-log option
#
#   Squid will write the Referer field from HTTP requests to the
#   filename specified here.  By default referer_log is disabled.
#
#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


# 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
#   reasonable 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).
#
#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, then turn off this option.
#
#Default:
# ftp_passive on

#  TAG: cache_dns_program
# Note: This option is only available if Squid is rebuilt with the
#       --disable-internal-dns option
#
#   Specify the location of the executable for dnslookup process.
#
#Default:
# cache_dns_program /usr/lib/squid/

#  TAG: dns_children
# Note: This option is only available if Squid is rebuilt with the
#       --disable-internal-dns option
#
#   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.
#
#   You must have at least one dnsserver process.
#
#Default:
# dns_children 5

#  TAG: dns_retransmit_interval
#   Initial retransmit interval for DNS queries. The interval is
#   doubled each time all configured DNS servers have been tried.
#
#
#Default:
# dns_retransmit_interval 5 seconds

#  TAG: dns_timeout
#   DNS Query timeout. If no response is received to a DNS query
#   within this time then all DNS servers for the queried domain
#   is assumed to be unavailable.
#
#Default:
# dns_timeout 5 minutes

#  TAG: dns_defnames   on|off
# Note: This option is only available if Squid is rebuilt with the
#       --disable-internal-dns option
#
#   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.
#
#Default:
# 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
#
#Default:
# none

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

#  TAG: unlinkd_program
#   Specify the location of the executable for file deletion process.
#
#Default:
# 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 compilation)
#   with the '--enable-icmp' option.
#
#Default:
# 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.
#
#Default:
redirect_program /etc/squid/bannerfilter/redirector.pl

#  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.
#
#Default:
# 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.
#
#Default:
# redirect_rewrites_host_header on

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

#  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
#
#Default:
authenticate_program /usr/bin/ncsa_auth /etc/squid/squid_passwd

#  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.
#
#Default:
# authenticate_children 5

#  TAG: authenticate_ttl
#   The time a checked username/password combination remains cached.
#   If a wrong password is given for a cached user, the user gets
#   removed from the username/password cache forcing a revalidation.
#
#Default:
# authenticate_ttl 1 hour

#  TAG: authenticate_ip_ttl
#   With this option you control how long a proxy authentication
#   will be bound to a specific IP address. If a request using
#   the same user name is received during this time then access
#   will be denied and both users are required to reauthenticate
#   them selves.  The idea behind this is to make it annoying
#   for people to share their password to their friends, but
#   yet allow a dialup user to reconnect on a different dialup
#   port.
#
#   The default is 0 to disable the check. Recommended value
#   if you have dialup users are no more than 60 seconds to allow
#   the user to redial without hassle. If all your users are
#   stationary then higher values may be used.
#
#   See also authenticate_ip_ttl_is_strict
#
#Default:
# authenticate_ip_ttl 0 seconds

#  TAG: authenticate_ip_ttl_is_strict
#   This option makes authenticate_ip_ttl a bit stricted. With this
#   enabled authenticate_ip_ttl will deny all access from other IP
#   addresses until the TTL has expired, and the IP address "owning"
#   the userid will not be forced to reauthenticate.
#
#Default:
# authenticate_ip_ttl_is_strict on


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

#  TAG: wais_relay_host
#  TAG: wais_relay_port
#   Relay WAIS request to host (1st arg) at port (2 arg).
#
#Default:
# wais_relay_port 0

#  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 10 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, there will be no limit
#   imposed.
#
#Default:
# request_body_max_size 1 MB

#  TAG: reply_body_max_size   (KB)
#   This option specifies the maximum size of a reply body.  It
#   can be used to prevent users from downloading very large files,
#   such as MP3's and movies.   The reply size is checked twice.
#   First when we get the reply headers, we check the
#   content-length value.  If the content length value exists and
#   is larger than this parameter, the request is denied and the
#   user receives an error message that says "the request or reply
#   is too large." If there is no content-length, and the reply
#   size exceeds this limit, the client's connection is just closed
#   and they will receive a partial reply.
#
#   NOTE: downstream caches probably can not detect a partial reply
#   if there is no content-length header, so they will cache
#   partial responses and give them out as hits.  You should NOT
#   use this option if you have downstream caches.
#
#   If you set this parameter to zero (the default), there will be
#   no limit imposed.
#
#Default:
# reply_body_max_size 0

#  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: overrsde-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.
#
#   Note, you must uncomment all the default lines if you want
#   to change one. The default setting is only active if none is
#   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 year.
#
#   Specify a number here, followed by units of time.  For example:
#      1 week
#      3.5 days
#      4 months
#      2.2 hours
#
#   NOTE: this parameter is not used when using the enhanced
#   replacement policies, GDSH or LFUDA.
#
#Default:
# reference_age 1 year

#  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.
#
#Default:
# 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.
#
#Default:
# 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.
#
#Default:
# positive_dns_ttl 6 hours

#  TAG: negative_dns_ttl   time-units
#   Time-to-Live (TTL) for negative caching of failed DNS lookups.
#
#Default:
# 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 requested. (default)
#
#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).
#
#Default:
# connect_timeout 2 minutes

#  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: siteselect_timeout   time-units
#   For URN to multiple URL's URL selection
#
#Default:
# 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.
#
#Default:
# 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.
#
#Default:
# 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 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, pconn_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 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.
#
#   Only src type ACL checks are fully supported.  A src_domain
#   ACL might work at times, but it will not always provide
#   the correct result.
#
#   This option may be disabled by using --disable-ident with
#   the configure script.
#
#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


# 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 myport   3128 ...      # (local socket TCP port)
#   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 ...
#   acl aclname ident_regex [-i] pattern ...
#     # 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 ...
#   acl aclname proxy_auth_regex [-i] pattern ...
#     # 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
#
#   acl aclname maxconn number
#     # This will be matched when the client's IP address has
#     # more than <number> HTTP connections established.
#
#   acl req_mime_type mime-type1 ...
#     # regex match agains the mime type of the request generated
#     # by the client. Can be used to detect file upload or some
#     # types HTTP tunelling requests.
#     # NOTE: This does NOT match the reply. You cannot use this
#     # to match the returned file type.
#
#Examples:
#acl myexample dst_as 1241
#acl password proxy_auth REQUIRED
#acl fileupload req_mime_type -i ^multipart/form-data$
#
#Recommended minimum configuration:
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      # http
acl Safe_ports port 21      # ftp
acl Safe_ports port 443 563   # https, snews
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 CONNECT method CONNECT
acl rede_interna src 192.168.1.0/24
acl password proxy_auth REQUIRED
acl palavras url_regex -i "/etc/squid/palavras/palavras.txt"


#  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, 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:
# http_access deny all
#
#Recommended minimum configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
# Deny requests to unknown ports
http_access deny !Safe_ports
# Deny CONNECT to other than SSL ports
http_access deny CONNECT !SSL_ports
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
# And finally deny all other access to this proxy
#http_access deny all
#http_access allow rede_interna
http_access allow password
http_access deny palavras

#
#  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 eveyone
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.
#
#Default setting:
# miss_access allow all

#  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: 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).
#
#Default:
# 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.
#
#Default:
# 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."
#
#Default:
# cache_mgr webmaster

#  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 proxy and GID to proxy.
#
#   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.
#
#Default:
# 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.
#
#Default:
# none

#  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.
#
#Default:
# none

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


# 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_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".
#
#   If you want virtual port support then specify the port as "0".
#
#   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.
#
#Default:
# httpd_accel_port 80

#  TAG: httpd_accel_single_host   on|off
#   If you are running Squid as a accelerator and have a single backend
#   server then set this to on. This causes Squid to forward the request
#   to this server irregardles of what any redirectors or Host headers
#   says.
#
#   Leave this at off if you have multiple backend servers, and use a
#   redirector (or host table or private DNS) to map the requests to the
#   appropriate backend servers. Note that the mapping needs to be a
#   1-1 mapping between requested and backend (from redirector) domain
#   names or caching will fail, as cacing is performed using the
#   URL returned from the redirector.
#
#   See also redirect_rewrites_host_header.
#
#Default:
# httpd_accel_single_host off

#  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'. Note however that your
#   proxy users may have trouble to reach the accelerated domains
#   unless their browsers are configured not to use this proxy for
#   those domains (for example via the no_proxy browser configuration
#   setting)
#
#Default:
# 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.
#
#Default:
# httpd_accel_uses_host_header off


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

#  TAG: dns_testnames
#   The DNS tests exit as soon as the first site is successfully looked up
#
#   This test can be disabled with the -D command line option.
#
#Default:
# 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>'.
#
#Default:
# logfile_rotate 10

#  TAG: append_domain
#   Appends local domain name to hostnames without any dots in
#   them.  append_domain must begin with a period.
#
#Example:
# append_domain .yourdomain.com
#
#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: 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
#   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.
#
#Default:
# none

#  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.
#
#Default:
# 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.
#
#Default:
# none

#  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
#
#Default:
# 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.
#
#Default:
# 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'.
#
#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: 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.
#
#Example:
# cachemgr_passwd secret shutdown
# cachemgr_p