Hi, I am not sure if this is the right place to ask this question !! I am looking for a "netfilter" kind of utility in MAC OS X or above. How can I write a protocol handler NKE, which diverts all the packets of a protocol, say TCP, packets to a handler program.In linux the netfilter provides the facility to write hooks to diverts the packets for packet filtering or mangling. Data link NKEs,Protocol handler NKEs are provided in MAC. But I am not sure how they help me. Or how to use them to write a handler function. regards, -muneeb- _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.