this program is "iptables support tool" Step 1 if your system are squeeze,only run sfw # cp -pi iptables /etc/init.d/iptables && chmod +x /etc/init.d/iptables Step 2 # /etc/init.d/iptables stop Step 3 # vim /etc/iptables-save Step 4 # /etc/init.d/iptables start