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“main” (Installation and Administration) — 2004/6/25 — 13:29 — page 606 — #632

General Conﬁguration Options (Selection)

http_port 3128 This is the port on which Squid listens for client requests.

The default port is 3128, but 8080 is also common. If desired, specify

several port numbers separated by blank spaces.

cache_peer <hostname> <type> <proxy-port> <icp-port>

Here, for example, enter a parent proxy to use the proxy of your ISP.

As <hostname>, enter the name and IP address of the proxy to use

and, as <type>, parent. For <proxy-port>, enter the port number that is

also set by the operator of the parent for use in the browser, usually

8080. Set the <icp-port> to 7 or 0 if the ICP port of the parent is not

known and its use is irrelevant to the provider. In addition, default

and no-query should be speciﬁed after the port numbers to prohibit

the use of the ICP protocol. Squid then behaves like a normal browser

as far as the provider’s proxy is concerned.

cache_mem 8 MB This entry deﬁnes the amount of memory Squid can

use for the caches. The default is 8 MB.

cache_dir ufs /var/cache/squid/ 100 16 256

The entry cache_dir deﬁnes the directory where all the objects are

stored on disk. The numbers at the end indicate the maximum disk

space in MB to use and the number of directories in the ﬁrst and

second level. The ufs parameter should be left alone. The default is

100 MB occupied disk space in the /var/cache/squid directory

and creation of sixteen subdirectories inside it, each containing 256

more subdirectories. When specifying the disk space to use, leave

sufﬁcient reserve disk space. Values from a minimum of ﬁfty to a

maximum of eighty percent of the available disk space make the most

sense here. The last two numbers for the directories should only be

increased with caution, because too many directories can also lead to

performance problems. If you have several disks that share the cache,

enter several cache_dir lines.

cache_access_log /var/log/squid/access.log

Path for log messages.

cache_log /var/log/squid/cache.log

Path for log messages.

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25.3. Proxy Server: Squid