Clam AntiVirus (ClamAV) is a free software, cross-platform and open-source antivirus software toolkit able used to detect trojans and malicious softwares including viruses. One of its main uses is on mail servers as a server-side email virus scanner. ClamAV includes a number of utilities: a command-line scanner, automatic database updater and a scalable multi-threaded daemon, running on an anti-virus engine from a shared library. In this very blog you gonna learn in detail the installation and configuration of ClamAV.
Install EPEL Repo
First we need to install EPEL release as ClamAv installation requires some necessary packages.
dnf install epel-release -y
dnf install clamav -y
dnf install clamd -y
dnf install clamav clamd clamav-update -y
Configure SElinux for ClamAV
Adjust ClamAv with SELinux and give it access to all your files with the following command:
setsebool -P antivirus_can_scan_system 1
Download latest Signature for ClamAV
Now use following command to get latest signatures of antivirus.
We need to locate ‘LocalSocket‘ parameter in /etc/clamd.d/scan.conf file and enable it so that we can use ClamAV.
use below command to enable it.
sed -i 's/#LocalSocket \/run/LocalSocket \/run/g' /etc/clamd.d/scan.conf
Create ClamAV Systemd Service
Create systemd service for ClamAV and set it to auto start.
Add below content in freshclam.service file and save the changes.
Description = ClamAV Scanner
After = network.target
Type = forking
# if you want to scan more than one in a day change the number 1 with your desired number.
ExecStart = /usr/bin/freshclam -d -c 1
Restart = on-failure
Start and Enable Services
Everything has been installed and configured now its time to enable all services on boot.
systemctl start clamd@scan
Use following command to check the status of ClamAV services
systemctl start freshclam
systemctl enable clamd@scan
systemctl enable freshclam
systemctl status clamd@scan
systemctl status freshclam
That’s about it.