Advanced features of netfilter/iptables
It is commonly known that netfilter/iptables is the firewall of the Linux operating system. What is not commonly known is that iptables has many hidden gems that can allow you do things with your firewall that you might never have even imagined. In this article I am going to introduce many of these features with some practical uses.
By Barry O'Donovan at the Linux Gazette.
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