Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 04-08-2006 Installation Manual page 808

• Use different access rules based on time of day, day of the week, date, etc.
• Use different rules for different user groups.
squidGuard and Squid cannot be used to:
• Edit, filter, or censor text inside documents.
• Edit, filter, or censor HTML-embedded script languages, such as JavaScript or
VBscript.
Before it can be used, install squidGuard. Provide a minimal configuration file as
/etc/squidguard.conf. Find configuration examples in
.squidguard.org/config/. Experiment later with more complicated configura-
tion settings.
Next, create a dummy "access denied" page or a more or less complex CGI page to
redirect Squid if the client requests a blacklisted Web site. Using Apache is strongly
recommended.
Now, configure Squid to use squidGuard. Use the following entry in the /etc/squid/
squid.conf file:
redirect_program /usr/bin/squidGuard
Another option called redirect_children configures the number of "redirect"
(in this case squidGuard) processes running on the machine. squidGuard is fast enough
to handle many requests: on a 500 MHz Pentium with 5,900 domains and 7,880 URLs
(totaling 13,780), 100,000 requests can be processed within 10 seconds. Therefore, it
is not recommended to set more than four processes, because the allocation of these
processes would consume an excessive amount of memory
redirect_children 4
Last, have Squid load the new configuration by running rcsquid reload. Now, test
your settings with a browser.
808 Installation and Administration
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