Scott C. Best wrote: > The idea we're looking into for echoWare is pretty simple: if > a rendezvous server can help determine a source-IP for a client, it > can be used to determine a source-Port as well. So when A contacts B, > it does so at the same UDP port that B used to contact the rendezvous > server, and so no ICMP port unreachable message is generated (though > a "stateful" firewall would/should prevent).
Lets assume we are speaking about restricted cone routers - this is the most common case. Router at B side has mapping for packet, coming from server, but not from A. Depending on a router type, it may either send ICMP message or not (most likely, it will). _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
