How to install CSF and LFD

CSF and LFD is a firewall (firewall and anti-brute-force), which monitors the logs for potential attackers to block access, it is very powerful, flexible and yet easy to configure.

Download

• cd  / tmp
• wget http://www.configserver.com/ free / csf.tgz

Unzip

• tar  -xzf csf.tgz

Install

• cd  csf
• sh install . sh

Set

• vi  / etc / csf / csf.conf

For details on open ports:

• fuser nmap localhost

Change the values of TCP_IN, TCP_OUT, UDP_IN, UDP_OUT your needs.