Installing Rkhunter (Rootkit Hunter) in RHEL, CentOS and Fedora

cd /tmp
# wget http://ncu.dl.sourceforge.net/project/rkhunter/rkhunter/1.4.0/rkhunter-1.4.0.tar.gz

# tar -xvf rkhunter-1.4.0.tar.gz
# cd rkhunter-1.4.0
# ./installer.sh --layout default --install

# /usr/local/bin/rkhunter --update
# /usr/local/bin/rkhunter --propupd

nano /etc/cron.daily/rkhunter.sh

Add the following lines of code to it and replace “YourServerNameHere” with your “Server Name” and “your@email.com” with your “Email Id“.

#!/bin/sh
(
/usr/local/bin/rkhunter --versioncheck
/usr/local/bin/rkhunter --update
/usr/local/bin/rkhunter --cronjob --report-warnings-only
) | /bin/mail -s 'rkhunter Daily Run (servername)' youremail@domain.com

Set execute permission on the
file.

# chmod 755 /etc/cron.daily/rkhunter.sh

To scan the entire file system, run the Rkhunter as a root user.

# rkhunter --check

The above command generates log file under /var/log/rkhunter.log with the checks results made by Rkhunter. For more information and options please run the following command.

# rkhunter --help

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