Rkhunter installation or protection against Trojans and Shell (CentOS, Red Hat)

Rkhunter installation and using rkhunter to find Trojans and bookmarking engine
rkhunter is a wonderful piece of server software that will be used for security server for Trojans, bookmarks, and other nasties by checking the MD5 sums wrong control access rights and signatures of bookmarks in the kernel modules.
Installation:
# yum install rkhunter
Project site:
http://downloads.rootkit.nl/
To run the program, type:
# rkhunter-c