Rkhunter is a very useful security scanning tool that is used to scan for trojans, local exploits and other security problems on linuxserver. It is a cron job that scans your server for security problems.

You can install rootkit using following steps.

1. Login to your server via SSH as root.
cd /usr/local/src/
2. Download latest RKHunter Version [1.3.2]
wget rkhunter.1.3.2.tar.gz
3. Extract files
tar -xzvf rkhunter-1.3.2.tar.gz
cd rkhunter-1.3.2
4. Setup cron for RKHunter to e-mail you daily scan reports.
pico /etc/cron.daily/rkhunter.sh
Add The Following Lines:
/usr/local/bin/rkhunter –update && /usr/local/bin/rkhunter -c –cronjob 2>&1 | mail -s "RKhunter Scan Details" your email address (Replace the e-mail above with your e-mail.)

Type: chmod 700 /etc/cron.daily/rkhunter.sh

That's it!!