UPnP, NATs, and P2P

Bill Cox <[email protected]> Mon, 14 Feb 2005 05:24:08 -0500
Newsgroups gmane.network.bit-torrent.general
Organization ViASIC
Message-ID <1108376648.29903.41.camel@swordfish>
>From what I can tell, enabling UPnP on NAT enabled gateway is not
currently a good idea.  There are too many computers with spy-ware and
worse, and allowing those applications to open ports through your fire-
wall is risky.

The problem this causes is that P2P enabled applications like BitTorrent
aren't able to contact peers behind NATs unless the users are computer-
savvy enough to forward a BitTorrent port.

Is this a long-term problem, or is there some solution out there?  IPv6
wont do it: we don't use NATs just to save IP address space, we use NATs
for security.

Bill




 
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