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* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
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<TITLE>freshclam: Setting up auto-updating</TITLE>
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<B> Next:</B> <A NAME="tex2html556"
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HREF="node17.html">Database mirrors</A>
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<B> Up:</B> <A NAME="tex2html552"
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HREF="node6.html">Installation</A>
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<B> Previous:</B> <A NAME="tex2html546"
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HREF="node15.html">Testing</A>
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<H2><A NAME="SECTION000310000000000000000">
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freshclam: Setting up auto-updating</A>
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</H2>
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<SPAN CLASS="textit">freshclam</SPAN> is a default database updater for Clam AntiVirus.
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It can work in two modes:
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<UL>
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<LI>interactive - from command line, verbosly
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</LI>
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<LI>daemon - alone, silently
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</LI>
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</UL>
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When started by a superuser (by default) it drops privileges and switches
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to the <SPAN CLASS="textit">clamav</SPAN> user. <SPAN CLASS="textit">freshclam</SPAN> uses the
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<TT><A NAME="tex2html21"
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HREF="database.clamav.net">database.clamav.net</A></TT> round-robin DNS which automatically selects
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a database mirror<A HREF="node17.html#mirrors">2.11</A>. freshclam is an advanced tool: supports
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proxy servers (with authentication), digital signature verification and
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various error scenarios. <SPAN CLASS="textbf">Quick test: run <SPAN CLASS="textit">freshclam</SPAN> (as
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superuser) with no parameters and check the output.</SPAN> If everything
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is OK you may create the log file in /var/log (owned by <SPAN CLASS="textit">clamav</SPAN> or
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another user freshclam will be running as (<code>--user</code>):
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<PRE>
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# touch /var/log/clam-update.log
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# chmod 600 /var/log/clam-update.log
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# chown clamav /var/log/clam-update.log
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</PRE>
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Now you <SPAN CLASS="textit">should</SPAN> edit the configuration file (usually
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<SPAN CLASS="textit">freshclam.conf</SPAN>) and configure the <SPAN CLASS="textit">UpdateLogFile</SPAN> directive
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to point the created log file (it's highly recommended). Optionally you
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may force the log file path with <SPAN CLASS="textit">-l</SPAN>. Finally, to run freshclam
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in the daemon mode execute:
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<PRE>
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# freshclam -d
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</PRE>
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The other method is to use the <SPAN CLASS="textit">cron</SPAN> daemon. You have to add the
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following line to the crontab of the <SPAN CLASS="textbf">root</SPAN> or <SPAN CLASS="textbf">clamav</SPAN> users:
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<SMALL CLASS="SMALL"> </SMALL><PRE>
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N * * * * /usr/local/bin/freshclam --quiet
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</PRE>
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to check for a new database every hour. <SPAN CLASS="textbf">N should be a
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number between 1 and 59 of your choice. Please don't choose any multiple
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of 10, because there are already too many servers using those time slots.</SPAN>
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Proxy settings are only configurable via the configuration file (so you
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can setup proper permissions to protect your proxy password):
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<PRE>
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HTTPProxyServer myproxyserver.com
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HTTPProxyPort 1234
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HTTPProxyUsername myusername
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HTTPProxyPassword mypass
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</PRE>
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<BR>
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<B> Next:</B> <A NAME="tex2html556"
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2004-06-14 15:45:22 +00:00
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HREF="node17.html">Database mirrors</A>
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2004-07-22 19:29:34 +00:00
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<B> Up:</B> <A NAME="tex2html552"
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2004-03-13 22:13:40 +00:00
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HREF="node6.html">Installation</A>
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<B> Previous:</B> <A NAME="tex2html546"
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HREF="node15.html">Testing</A>
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<B> <A NAME="tex2html554"
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HREF="node1.html">Contents</A></B> </DIV>
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<!--End of Navigation Panel-->
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<ADDRESS>
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Tomasz Kojm
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2004-07-22
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