<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!--Converted with LaTeX2HTML 2008 (1.71) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Setting up auto-updating</TITLE> <META NAME="description" CONTENT="Setting up auto-updating"> <META NAME="keywords" CONTENT="clamdoc"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2008"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="clamdoc.css"> <LINK REL="next" HREF="node26.html"> <LINK REL="previous" HREF="node23.html"> <LINK REL="up" HREF="node19.html"> <LINK REL="next" HREF="node25.html"> </HEAD> <BODY > <DIV CLASS="navigation"><!--Navigation Panel--> <A NAME="tex2html514" HREF="node25.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html510" HREF="node19.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html504" HREF="node23.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html512" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html515" HREF="node25.html">Closest mirrors</A> <B> Up:</B> <A NAME="tex2html511" HREF="node19.html">Configuration</A> <B> Previous:</B> <A NAME="tex2html505" HREF="node23.html">Testing</A> <B> <A NAME="tex2html513" HREF="node1.html">Contents</A></B> <BR> <BR></DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION00054000000000000000"> Setting up auto-updating</A> </H2> <code>freshclam</code> is the automatic database update tool for Clam AntiVirus. It can work in two modes: <UL> <LI>interactive - on demand from command line </LI> <LI>daemon - silently in the background </LI> </UL> <code>freshclam</code> is advanced tool: it supports scripted updates (instead of transferring the whole CVD file at each update it only transfers the differences between the latest and the current database via a special script), database version checks through DNS, proxy servers (with authentication), digital signatures and various error scenarios. <SPAN CLASS="textbf">Quick test: run freshclam (as superuser) with no parameters and check the output.</SPAN> If everything is OK you may create the log file in /var/log (owned by <SPAN CLASS="textit">clamav</SPAN> or another user <code>freshclam</code> will be running as): <PRE> # touch /var/log/freshclam.log # chmod 600 /var/log/freshclam.log # chown clamav /var/log/freshclam.log </PRE> Now you <SPAN CLASS="textit">should</SPAN> edit the configuration file <code>freshclam.conf</code> and point the <SPAN CLASS="textit">UpdateLogFile</SPAN> directive to the log file. Finally, to run <code>freshclam</code> in the daemon mode, execute: <PRE> # freshclam -d </PRE> The other way is to use the <SPAN CLASS="textit">cron</SPAN> daemon. You have to add the following line to the crontab of <SPAN CLASS="textbf">root</SPAN> or <SPAN CLASS="textbf">clamav</SPAN> user: <SMALL CLASS="SMALL"> </SMALL><PRE> N * * * * /usr/local/bin/freshclam --quiet </PRE> to check for a new database every hour. <SPAN CLASS="textbf">N should be a number between 3 and 57 of your choice. Please don't choose any multiple of 10, because there are already too many clients using those time slots.</SPAN> Proxy settings are only configurable via the configuration file and <code>freshclam</code> will require strict permission settings for the config file when <code>HTTPProxyPassword</code> is turned on. <PRE> HTTPProxyServer myproxyserver.com HTTPProxyPort 1234 HTTPProxyUsername myusername HTTPProxyPassword mypass </PRE> <P> <BR><HR> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A> <UL CLASS="ChildLinks"> <LI><A NAME="tex2html516" HREF="node25.html">Closest mirrors</A> </UL> <!--End of Table of Child-Links--> <DIV CLASS="navigation"><HR> <!--Navigation Panel--> <A NAME="tex2html514" HREF="node25.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html510" HREF="node19.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html504" HREF="node23.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html512" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html515" HREF="node25.html">Closest mirrors</A> <B> Up:</B> <A NAME="tex2html511" HREF="node19.html">Configuration</A> <B> Previous:</B> <A NAME="tex2html505" HREF="node23.html">Testing</A> <B> <A NAME="tex2html513" HREF="node1.html">Contents</A></B> </DIV> <!--End of Navigation Panel--> <ADDRESS> Tomasz Kojm 2010-08-12 </ADDRESS> </BODY> </HTML>