How to Install APF Firewall In Linux Servers

APF(Advanced Policy Firewall) is a policy based Iptables firewall system designed for ease of use and configuration. The configuration of APF is quite simple and easy. Below are the steps to install APF firewall:

1. Change to tmp folder to download apf.

cd /tmp

2. Download the apf tar file using wget.

wget http://www.rfxnetworks.com/downloads/apf-current.tar.gz

3. Extract the downloaded file:

tar xvzf apf-current.tar.gz

4. Now, cd to apf folder:

cd apf-*

5. Install APF using following:

./install.sh

6. Disable development mode by modify the /etc/apf/conf.apf. To do this, edit the following line as shown:

DEVEL_MODE="0"

7. Save the changes and exit the file, and then restart the firewall.

apf -r

Firewall is now active. Enjoy.