If you’ve spent much time around the Linux networking stack, chances are you’ve heard of IPTables. If you haven’t, IPTables is the framework that decides what to do with incoming network packets. It can be used to set up everything from simple firewalls up until complicated stateful routers and NATs. First released in 1998, this venerable software package has powered many networks for a venerable two decades.
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Why NFTables is better than IPTables, and how to switch
Tunnelhound Internals December 04, 2020