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<H2><A NAME="SECTION000310000000000000000">
freshclam: Setting up auto-updating</A>
</H2>
<I>freshclam</I> is a default database updater for Clam AntiVirus.
It can work in two modes:
<UL>
<LI>interactive - from command line, verbosly
</LI>
<LI>daemon - alone, silently
</LI>
</UL>
When started by a superuser (by default) it drops privileges and switches
to the <I>clamav</I> user. <I>freshclam</I> uses the
<TT><A NAME="tex2html21"
HREF="database.clamav.net">database.clamav.net</A></TT> round-robin DNS which automatically selects
a database mirror<A HREF="node17.html#mirrors">2.11</A>. freshclam is an advanced tool: supports
proxy servers (with authentication), digital signature verification and
various error scenarios. <B>Quick test: run <I>freshclam</I> (as
superuser) with no parameters and check the output.</B> If everything
is OK you may create the log file in /var/log (owned by <I>clamav</I> or
another user freshclam will be running as (<code>--user</code>):
<PRE>
# touch /var/log/clam-update.log
# chmod 600 /var/log/clam-update.log
# chown clamav /var/log/clam-update.log
</PRE>
Now you <I>should</I> edit the configuration file (usually
<I>freshclam.conf</I>) and configure the <I>UpdateLogFile</I> directive
to point the created log file (it's highly recommended). Optionally you
may force the log file path with <I>-l</I>. Finally, to run freshclam
in the daemon mode execute:
<PRE>
# freshclam -d
</PRE>
The other method is to use the <I>cron</I> daemon. You have to add the
following line to the crontab of the <B>root</B> or <B>clamav</B> users:
<FONT SIZE="-1"> </FONT><PRE>
N * * * * /usr/local/bin/freshclam --quiet
</PRE>
to check for a new database every hour. <B>N should be a
number between 1 and 59 of your choice. Please don't choose any multiple
of 10, because there are already too many servers using those time slots.</B>
Proxy settings are only configurable via the configuration file (so you
can setup proper permissions to protect your proxy password):
<PRE>
HTTPProxyServer myproxyserver.com
HTTPProxyPort 1234
HTTPProxyUsername myusername
HTTPProxyPassword mypass
</PRE>
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<ADDRESS>
Tomasz Kojm
2004-06-14
</ADDRESS>
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