Install rkhunter

The following steps explains how to install rkhunter in your server.

Firstly login to your server as root. And navigate to the directory where you would download the file.

# cd /usr/local/src

Now download the source file using wget.

# wget http://nchc.dl.sourceforge.net/project/rkhunter/rkhunter/1.4.0/rkhunter-1.4.0.tar.gz

Now extract the file using the following comand.

# tar -zxvf rkhunter-1.4.0.tar.gz

And get into the directory rkhunter-*

# cd rkhunter-1.4.0

Now, the command below will install rkhunter in your server.

# ./installer.sh --install

Now to automate the scan do the following steps below. We are creating the file in /usr/local/

# vi rkhunterscan

Add the following script to the file.

#!/bin/sh

( /usr/local/bin/rkhunter --versioncheck
/usr/local/bin/rkhunter --update
/usr/local/bin/rkhunter --cronjob --report-warnings-only
) | /usr/bin/mail -s "rkhunter output" admin@yourdomain.com

Now change the permission.

# chmod 750 rkhunterscan

Now edit the cronjob.

# crontab -e

Now add the following line.

0 3 * * * /usr/local/rkhunterscan -c