ClamAV on CentOS

ClamAV is a free anti-virus program available for Linux operating systems.This will explain how to Install ClamAV on CentOS 6 64.

Install the epel repository

First, determine the most current version of the repository that is available. Using a web browser, visit http://download.fedoraproject.org/pub/epel/6/x86_64/

Note you can substitute the CentOS version ( /6/ ) with your current version.

Scroll down the page until you find epel-release-v-r.noarch-rpm, substituting v for your CentOS version and r will be the current repository version. For this example, the current version listed is epel-release-6-8.noarch-rpm .

Log into your server as root and run the following command using the correct repository version you discovered in the previous step

CentOS 6.x

rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

CentOS 5.x

rpm -Uvh http://mirror.pnl.gov/epel/5/x86_64/epel-release-5-4.noarch.rpm

Enable Epel Repo – Set enabled=1:

nano /etc/yum.d/epel.repo
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
failovermethod=priority
enabled=0
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

Install clamav


# yum -y install clamav clamd

Set clamav to start on reboot

# chkconfig clamd on

Update the clamav virus database

# /usr/bin/freshclam

Error:

# /usr/bin/freshclam
ERROR: Please edit the example config file /etc/freshclam.conf
ERROR: Can't open/parse the config file /etc/freshclam.conf

Comment out the Line with “Example”


# nano /etc/freshclam.conf
##
## Example config file for freshclam
## Please read the freshclam.conf(5) manual before editing this file.
##
# Comment or remove the line below.
Example

Change to


# nano /etc/freshclam.conf
##
## Example config file for freshclam
## Please read the freshclam.conf(5) manual before editing this file.
##
# Comment or remove the line below.
# Example

Run freshclam again

# /usr/bin/freshclam

Start Clamav

# service clamd start

# service clamd start
Starting Clam AntiVirus Daemon: ERROR: Please edit the example config file /etc/clamd.conf
ERROR: Can't open/parse the config file /etc/clamd.conf
 [FAILED]

Edit the config file, comment out “Example”

##
## Example config file for the Clam AV daemon
## Please read the clamd.conf(5) manual before editing this file.
##
# Comment or remove the line below.
#Example

Set Clamav to run a daily scan

# nano /etc/cron.daily/clamscan
#!/bin/bash
# setup the scan location and scan log
CLAM_SCAN_DIR="/var/www/vhosts"
CLAM_LOG_FILE="/var/log/clamav/dailyscan.log"
# update the virus database
/usr/bin/freshclam
# run the scan
/usr/bin/clamscan -i -r $CLAM_SCAN_DIR >> $CLAM_LOG_FILE
MAILTO=user@domain.com

or

clamscan -i -r --log=/var/log/clamscan-date.txt /var/www/vhosts/*

Set the cron file as an executible

chmod 555 /etc/cron.daily/clamscan

Test your installation and cron job

/etc/cron.daily/clamscan