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These series of commands allows you all at once to make a backup of your current config, edit that config, then saves it as the running config and makes it persistent. I would advise knowing what your doing to the config before running this because if you mess up say the port 22 portion, you may get knocked off the system. ;) Don't say I didn't warn ya!
Should run with sudo
a simple command in order to make iptables rules permanent, run @ sudo!
Stores the currently active iptables rules to a file that will be applied upon reboot