Rate of growth on IPv6 not fast enough?

Chris Adams cmadams at hiwaay.net
Wed Apr 21 08:24:28 CDT 2010


Once upon a time, Franck Martin <franck at genius.com> said:
> Why don't they use IPv6 instead of uPnP?

UPnP (or something like it) is needed for any kind of firewall for some
devices.

At least on Xbox, some games are essentially peer-to-peer; when userA
starts it up and invites friends, their Xbox becomes the game server.
The other people joining the game talk directly to userA's Xbox (they
don't go through a Microsoft Xbox Live server).

When userA sets up the game, their Xbox sends a UPnP request to the
local firewall to open up a port so outside connections can come in.  It
doesn't matter if there is IPv4, IPv6, NAT, etc. in play; the Xbox is
saying "let the Internet talk to me on port foo for a bit".

Now, the security model (or lack thereof) of UPnP can be debated, but
home users are going to need something like that for peer-to-peer
networking.  IPv6 is supposed to bring back end-to-end networking and
abolish NAT, but I think most people agree that the average home user
will still need a basic statefull firewall for protection, which means
there has to be a protocol for some devices to temporarily open up ports
on the firewall (or there's still no end-to-end).

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.




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