This post is all about how to backup and restore iptables on Linux systems. As a Linux System Administrator, it is important to understand iptables. With iptables, you can secure the Linux Operating System. In this post, you will find instructions on how to backup and restore iptables.
Taking the backup of iptables is a good idea and below are the steps you need to perform the task.
Perform a backup of iptables to a file
sudo iptables-save > /opt/iptables.backup
Performing a restore of iptables from a file
sudo iptables-restore < /opt/iptables.backup
Note: As a Linux System Administrator, it is recommended to use iptables. It helps to secure the Operating System. Before applying any new iptables configuration, always test your new settings on a test device.