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Sunday, 25 September 2005

Article Index
Keep your knowledge with OWL!
"Step 1: Suse 9.3 Installation"
"Step 2: Webmin installation and configuration" toc="1"
"Step 3: Apache2 configuration"
"InstallingOWL" toc="1"
"Step 5: MySQL configuration and OWL database installation" toc="1"
"Installing and configuring anti-virus software ClamAV" toc="1"
"Step 7: Get OWL ready to work" toc="1"
"Troubleshooting and additional help" toc="1"

Page 7 of 9

Step 6: Installing and configuring anti-virus software ClamAV

Clam AntiVirus is an anti-virus toolkit for UNIX. The main purpose of this software is integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon, a command line scanner, and a tool for automatic updating via Internet.

We will later use the software to automatically check documents for viruses.

ClamAV needs the user clamav installed.

Additionally you will need the zlib and zlib-devel package installed. If you didn’t do this during the installation process, please complete it now using the rpm command or YAST.

Please download the anti virus software here:

http://www.clamav.net/

Create user and group clamav as root:

groupadd clamav
useradd -g clamav -s /bin/false -c "Clam AntiVirus" clamav

The current stable version is 0.87. Compile the downloaded software:

tar -zxvf clamav-0.87.tar.gz
cd clamav-0.87
./configure --sysconfdir=/etc
make
su
make install

I didn't bother changing anything in /etc/clamav.conf. I ran freshclam to update the virus database and created a root cron entry with crontab -e

0 * * * *      /usr/local/bin/freshclam --quiet -l /var/log/clam-update.log

That’s it. To test our installation, please try to scan your home directory were you copied clamav after the download:

/usr/local/bin/clamscan -r -l scan.txt /home/user/clamav-0.87

This is the result I got:

----------- SCAN SUMMARY -----------
Known viruses: 40192
Engine version: 0.87
Scanned directories: 44
Scanned files: 740
Infected files: 5
Data scanned: 11.48 MB
Time: 33.754 sec (0 m 33 s)

It has found some test viruses in the clamav-0.87/test directory. The scan result is saved in the scan.txt log file.

You also need to add the following line into /etc/clamav.conf
TemporaryDirectory /var/tmp

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