Книга: Iptables Tutorial 1.2.2
This target is used to turn off connection tracking for all packets matching this rule. The target has been discussed at some length in the Untracked connections and the raw table section of the The state machine chapter.
The target takes no options and is very easy to use. Match the packets you wish to not track, and then set the NOTRACK target on the rules matching the packets you don't wish to track.
Note The target is only valid inside the raw table.
Note Works under late Linux 2.6 kernels.