Squid is a high-performance proxy caching server for web clients,  sup-
porting FTP, gopher, and HTTP data objects.  Unlike traditional caching
software, squid handles all requests in a single,  non-blocking,  I/O-
driven process.

Squid  supports  SSL,  extensive access controls, and full request log-
ging.  By using the lightweight Internet Cache Protocol,  squid  caches
can  be  arranged  in a hierarchy or mesh for additional bandwidth sav-
ings.

In order to use squid it must first be configured.
Uncomment and edit the following lines in /etc/squid.conf:

==============================================================================

cache_peer, never_direct/always_direct

    If you have a parent cache, put it here.  The administrators of the
    parent cache typically provided you with instructions.  You should
    always ask permission before adding a parent cache. See also the
    never_direct/always_direct directives.

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

    Add here (first number, here 100) the amount of hard disk space 
    (in megabytes) to devote to caching.

acl, http_access, icp_access

    Access control lists.  This is important because it prevents people
    from stealing your network resources.  To fill in the
    "allowed_hosts" ACL, use your network address (for instance
    192.168.10.0 and your network mask (for instance 255.255.255.0):

        acl manager proto cache_object
        acl localhost src 127.0.0.1/255.255.255.255
        acl all src 0.0.0.0/0.0.0.0
        acl allowed_hosts src 192.168.10.0/255.255.255.0

        http_access deny manager all
        http_access allow allowed_hosts
        http_access deny all

        icp_access  allow  allowed_hosts
        icp_access deny all

cache_mgr

    Put here the e-mail address of the manager:

cache_effective_user

    If you must start Squid as root, find a safe user and group to run
    as after startup (typically "nobody" and "nogroup").  Do not use
    "root", for security reasons.

visible_hostname

    The host name you advertise for the cache.

==============================================================================

After editing squid.conf to your liking, run Squid from the command
line TWICE:

    % /usr/sbin/squid -z
    % /usr/sbin/squid 

Check in the cache.log (/var/log/squid/log/cache.log) that
everything is all right.

If you need to start squid at boot make sure the rc.squid script
is executable.