# 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. # # 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. # # NOTE, tcp_incoming_address has been removed. You can now # specify IP addresses on the 'http_port' line. # #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 # connect-timeout=nn # digest-url=url # # 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. # # NOTE: non-ICP neighbors must be specified as 'parent'. # cache_peer 163.28.130.21 parent 3128 3130 no-query no-netdb-exchange no-digest cache_peer 163.28.130.22 parent 3128 3130 no-query no-netdb-exchange no-digest cache_peer 163.28.130.1 sibling 3128 3130 no-query proxy-only cache_peer 163.28.130.2 sibling 3128 3130 no-query proxy-only cache_peer 163.28.130.12 sibling 3128 3130 no-query proxy-only cache_peer 163.28.64.111 sibling 3128 3130 no-query no-netdb-exchange cache_peer 163.28.64.112 sibling 3128 3130 no-query no-netdb-exchange cache_peer 163.28.64.113 sibling 3128 3130 no-query no-netdb-exchange # 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: 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 ? .php .asp .cgi # 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 \? \.php \.asp \.cgi 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 default is 8 Megabytes. # cache_mem 256 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. # cache_swap_low 80 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. # maximum_object_size 16 MB # 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 32768 ipcache_low 90 ipcache_high 95 # TAG: fqdncache_size (number of entries) # Maximum number of FQDN cache entries. fqdncache_size 32768 # LOGFILE PATHNAMES AND CACHE DIRECTORIES # ----------------------------------------------------------------------------- # TAG: cache_dir # Usage: # # cache_dir Type Directory-Name Mbytes Level-1 Level2 # # 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 "asyncufs" 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. # # If no 'cache_dir' lines are specified, the following # default will be used: /home/squid/cache. # # '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 asyncufs /home/squid/cache/11 2823 48 64 cache_dir asyncufs /home/squid/cache/12 2823 48 64 cache_dir asyncufs /home/squid/cache/13 2823 48 64 cache_dir asyncufs /home/squid/cache/21 2823 48 64 cache_dir asyncufs /home/squid/cache/22 2823 48 64 cache_dir asyncufs /home/squid/cache/23 2823 48 64 cache_dir asyncufs /home/squid/cache/31 2823 48 64 cache_dir asyncufs /home/squid/cache/32 2823 48 64 cache_dir asyncufs /home/squid/cache/33 2823 48 64 cache_dir asyncufs /home/squid/cache/41 2823 48 64 cache_dir asyncufs /home/squid/cache/42 2823 48 64 cache_dir asyncufs /home/squid/cache/43 2823 48 64 cache_dir asyncufs /home/squid/cache/51 2823 48 64 cache_dir asyncufs /home/squid/cache/52 2823 48 64 cache_dir asyncufs /home/squid/cache/53 2823 48 64 cache_dir asyncufs /home/squid/cache/61 2823 48 64 cache_dir asyncufs /home/squid/cache/62 2823 48 64 cache_dir asyncufs /home/squid/cache/63 2823 48 64 cache_dir asyncufs /home/squid/cache/71 2823 48 64 cache_dir asyncufs /home/squid/cache/72 2823 48 64 cache_dir asyncufs /home/squid/cache/73 2823 48 64 # TAG: cache_access_log # Logs the client request activity. Contains an entry for # every HTTP and ICP queries received. # cache_access_log /home/squid/logs/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. # cache_log /home/squid/logs/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. # #cache_store_log /home/squid/logs/store.log cache_store_log none # 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 /home/squid/logs/swap/swap.log # 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 # OPTIONS FOR TUNING THE CACHE # ----------------------------------------------------------------------------- # 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. #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. #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. #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: 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: 14400 20% 28800 refresh_pattern ^gopher: 14400 0% 86400 refresh_pattern . 0 20% 4320 reload-into-ims # TAG: replacement_policy # The cache replacement policy parameter determines which # objects are evicted (replaced) when disk space is needed. # Squid used to have only a single replacement policy, LRU. # But when built with -DHEAP_REPLACEMENT you can choose # between two new, enhanced policies: # # GDSF: Greedy-Dual Size Frequency # LFUDA: Least Frequently Used with Dynamic Aging # # Both of these policies are frequency based rather than recency # based, and perform better than LRU. # # The 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 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 these 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. # replacement_policy LFUDA # 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. # #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. # #quick_abort_min 16 KB #quick_abort_max 16 KB #quick_abort_pct 95 # 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 ... # # 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 # # acl aclname maxconn number # # This will be matched when the client's IP address has # # more than HTTP connections established. # # #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 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 allow-ip src 163.28.0.0/16 140.117.0.0/16 140.127.0.0/16 163.15.0.0/16 163.16.0.0/16 163.18.0.0/16 163.24.0.0/16 192.83.190.0/23 192.83.194.0/23 192.192.0.0/16 203.64.74.0/23 203.64.120.0/21 203.64.128.0/21 203.64.152.0/24 203.64.166.0/23 203.64.168.0/22 203.64.238.0/24 203.68.0.0/21 203.68.92.0/22 203.68.96.0/22 203.68.192.0/18 203.71.8.0/23 203.71.76.0/22 203.71.98.0/23 203.71.140.0/22 203.71.180.0/24 203.71.185.0/24 203.71.208.0/24 203.71.232.0/21 203.71.250.0/24 203.72.0.0/17 203.72.196.0/23 203.72.208.0/21 210.60.192.0/24 210.70.128.0/17 210.71.0.0/19 140.111.2.37/32 163.26.220.5/32 acl local-ip dst 163.28.0.0/16 140.117.0.0/16 140.127.0.0/16 163.15.0.0/16 163.16.0.0/16 163.18.0.0/16 163.24.0.0/16 acl tw-dst-ip dst 163.28.0.0/16 140.96.0.0/11 140.128.0.0/12 140.92.0.0 139.175.0.0/16 139.223.0.0/16 163.12.0.0/14 163.16.0.0/14 168.95.0.0/16 192.72.0.0/16 192.83.160.0/19 192.83.192.0/22 192.192.0.0/16 202.39.0.0/16 202.132.128.0/17 202.145.128.0/17 203.64.0.0/12 210.59.0.0/16 210.64.0.0/13 210.60.0.0/14 210.71.0.0/17 210.192.0.0/16 210.208.0.0/16 210.209.0.0/18 210.242.0.0/17 134.208.0.0/16 acl tw-dst-dn dstdomain .tw .hinet.net .seed.net acl rc-proxy src 163.28.0.0/16 acl myip dst 140.117.11.101 140.117.11.100 acl adsldn1 dstdomain .edu .gov .org acl adsldn2 dstdomain .jp .cn .de .hk .ca .uk acl net dstdomain .net acl com dstdomain .com acl com2 dstdomain .yahoo.com .altavista.com .microsoft.com acl badcom dstdomain .geocities.com .xoom.com .8d8d.com acl tw dstdomain .tw # 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 all # # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS # http_access allow myip http_access deny local-ip http_access allow allow-ip http_access deny all # TAG: icp_access # Reply to all ICP queries we receive # icp_access deny local-ip icp_access allow allow-ip icp_access deny 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 deny rc-proxy miss_access allow allow-ip miss_access deny 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://squid.nlanr.net/Squid/FAQ/FAQ-10.html). cache_peer_access 163.28.130.22 allow !tw-dst-ip !tw !com !net cache_peer_access 163.28.130.21 allow !tw-dst-ip !tw !badcom com cache_peer_access 163.28.130.21 allow !tw-dst-ip !tw net cache_peer_access 163.28.130.1 allow all cache_peer_access 163.28.130.2 allow all cache_peer_access 163.28.130.12 allow all cache_peer_access 163.28.64.111 allow all cache_peer_access 163.28.64.112 allow all cache_peer_access 163.28.64.113 allow all # ADMINISTRATIVE PARAMETERS # ----------------------------------------------------------------------------- # 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 nobody cache_effective_group nobody # 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 proxy.nsysu.edu.tw # 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 proxy1.nsysu.edu.tw # TAG: hostname_aliases # A list of other DNS names that your cache has. # OPTIONS FOR THE CACHE REGISTRATION SERVICE # 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 # '. # #logfile_rotate 10 # 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. deny_info local.html local-ip deny_info auto.html tw-dst-ip deny_info sorry.html all # 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 on # 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 cachemgr_passwd disable authenticator config shutdown cachemgr_passwd none info counters cachemgr_passwd ¤£§i¶D§A 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 20 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 50. # store_objects_per_bucket 48 # TAG: client_db on|off # If you want to disable collecting per-client statistics, then # turn off client_db here. # #client_db on # 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 on # 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. always_direct allow tw-dst-ip always_direct allow tw always_direct allow badcom # 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. never_direct deny tw-dst-ip never_direct deny tw never_direct deny badcom #never_direct allow adsldn1 #never_direct allow adsldn2 #never_direct allow net never_direct allow com2 never_direct allow !com # TAG: coredump_dir # By default Squid leaves core files in the first cache_dir # directory. If you set 'coredump_dir' to a directory # that exists, Squid will chdir() to that directory at startup # and coredump files will be left there. coredump_dir /home/squid/logs