We just learned how to write basic IPTables Configuration Example Script for web servers. To check status of IPTables run following command as root: # iptables -L -n

iptables_firewall.sh Check Status of IPTables Now you can execute iptables_firewall.sh our shell script: $ sudo. Iptables -A INPUT -p icmp -icmp-type echo-request -j ACCEPT Iptables -A INPUT -p tcp -m tcp -m state -m comment -s 0.0.0.0/0 -dport 443 -state NEW -j ACCEPT -comment ' HTTPS ' Iptables -A INPUT -p tcp -m tcp -m state -m comment -s 0.0.0.0/0 -dport 80 -state NEW -j ACCEPT -comment ' HTTP ' Iptables -A INPUT -p tcp -m tcp -m state -m comment -s YOUR_IP -dport 22 -state NEW -j ACCEPT -comment 'SSH' Iptables -A INPUT -m state -state ESTABLISHED,RELATED -j ACCEPT Open in text editor iptables_firewall.sh file paste text below. To make IPTables rules persistent and auto load after reboot, install iptables persistent package for Ubuntu/Debian: $ sudo apt-get install iptables-persistent Create Shell Script FileĬreate new iptables_firewall.sh file, $ sudo touch iptables_firewall.shĪnd make it executable: $ sudo chmod +x iptables_firewall.sh IPTables Configuration GitHub Install iptables persistent package This IPTables basic rules will configure IPTables to open HTTP/HTTPS, PING for whole world, and SSH for your IP. Here is basic IPTables Configuration Example Shell Script.

Iptables examples