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SysAdmin: IPTables/NetFilter - Linux's Next-Generation Stateful Packet FilterNov 17, 2001, 23:04 (20 Talkback[s])
(Other stories by Duncan Napier)
"The IPTables/NetFilter application is considered to be the fourth generation of Linux packet filtering implementations. The first generation was Alan Cox's port of BSD UNIX's ipfw to Linux 1.1. Jos Vos and others extended this and added the ipfwadm user tool for manipulating the rules for filtering in the Linux 2.0 kernel. Paul "Rusty" Russell and Michael Neuling made some significant modifications to the 2.2 Linux kernel, and Russell added the user tool ipchains for controlling filtering rules for this kernel. Russell has now implemented a kernel framework called NetFilter.
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