> From: discuss-boun...@lopsa.org [mailto:discuss-boun...@lopsa.org] On > Behalf Of Yves Dorfsman > > Anyway, NAT is a problem for any p2p that is not tcp based, and voice > and > video tend to be udp... But, there are work-arounds, such as STUN which > work > quite well.
Nat is a problem for any p2p, including TCP. Things like STUN, and the more advanced Nat Traversal protocols like H.460(18,19,23,24) still cannot work if they're trying to penetrate anything other than a braindead Nat device. None of these can traverse an intelligent nat device such as cisco ASA, or netscreen, or sonicwall, etc. Things like SIP, H.460, XMPP, and whatever Skype uses ... They're all pretty intelligent about trying to establish a direct p2p connection whenever it's available, but these techniques have a tendency to require extra stuff on the Internet (such as a STUN server with two IP addresses, or a media relay) take time to negotiate, prone to failure, and simply can't work across security-minded nat devices. _______________________________________________ Discuss mailing list Discuss@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
