How to install APF on centos

APF is a popular firewall that is so powerful yet strong tool that because of its simple configuration and management sys admin preference so lets get to see How to install APF on centos

to install APF you can either download it from this link and then install it with rpm command or from repository. first update repository list:

yum update

yum install apf

after installing apf the main and important path of this program are listed in the table:

for some configurations you can edit /etc/apf/apf.conf. some key parameters of this file are in the picture:

some important and practical switches and commands for apf are listed below:

/usr/local/sbin/apf -s // To start APF
/usr/local/sbin/apf -r // To restart APF
/usr/local/sbin/apf -f // To stop APF.
/usr/local/sbin/apf -l // To list all the firewall rules.
/usr/local/sbin/apf -t // To view the output log status.
/usr/local/sbin/apf -a <IP Address> // To allow a host in the firewall
/usr/local/sbin/apf -d <IP Address> // To deny a host in the firewall
/usr/local/sbin/apf -o // To view all the configuration options
/usr/local/sbin/apf –help // To view all the options provided by the firewall.