php iptables

run   sudo visudo

root  ALL=(ALL) ALL

wwwrun ALL=NOPASSWD: /usr/sbin/iptables

<?php

$ip=$_SERVER['REMOTE_ADDR'];

echo " Welcome your IP $ip has been white listed";

 $web=shell_exec("sudo iptables -I INPUT 2 -m state --state NEW,RELATED,ESTABLISHED -m tcp -p tcp --dport 80 -s $ip -j ACCEPT");

 $sip=shell_exec("sudo iptables -I INPUT 2 -m state --state NEW,RELATED,ESTABLISHED -m udp -p udp --dport 28614 -s $ip -j ACCEPT"

?>

https://exain.wordpress.com/2007/11/24/execute-system-commands-via-php/