On Mon, 14 Jun 2004, James Housley wrote:
> > I have a product that is connected to a PC via eithernet. The product > runs FBSD, but I would likely put another FBSD box in the middle. I want > to be able modify packets for good and evil based on the data portion of > the packet. > > For example to ocasionally drop a packet that is acking some command. Or > send an ack for a command that was never sent. Or just change data to be > invalid. > > Then after messing with the data portion put it back in the queue to be > sent, if it wasn't just dropped. > > Jim > Is this product running over.. 1/ your own low-level protocol use netgraph etf node to divert packets to userland for processing by a program (using 'socket' node) example: nghook or 2/ IP? 2a/ UDP? or 2b/ some proprietary IP protocol? use ipfw and 'divert' to divert to a userland program for manipulation example: natd or tcpmssd (in ports/net) _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
