My believe too. iptables is not a promiscious app; it handles packets which come in/go out of the device. You see the broadcast because it is 'intended' for Computer B (and any other computer). The only way B would get it is if Computer A transmitted the packets to computer B (either directly or because B was a router). One question: How does computer A get the video? internal capture or is the data being sent to it? -Scott --- Chris Hoeschen <chris.hoeschen@xxxxxxxxxxxxx> wrote: > I maybe wrong but I don't believe netfilter will > process any packets not > intended for that box. TCPDump will see it as in a > hubbed environment > all nodes receive all packets but only those that > are destined for that > box will netfilter process. > __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com