Rkhunter or Rootkit Hunter is a scanning tool that scans for rootkits, backdoors and local exploits in your server.

Installation

$ wget http://nchc.dl.sourceforge.net/sourceforge/rkhunter/rkhunter-1.3.2.tar.gz

$ tar -xvzf rkhunter-1.3.2.tar.gz

$ cd rkhunter*

$ ./installer.sh --layout default --install

Usage

$ /usr/local/bin/rkhunter -c

Updating Rkhunter

$ rkhunter –update