[9964] in North American Network Operators' Group
Re: RFC-1918, NATs and games
daemon@ATHENA.MIT.EDU (David Bannister)
Mon Jun 9 20:01:47 1997
Date: Mon, 09 Jun 1997 19:56:21 -0400
To: "Justin W. Newton" <justin@priori.net>,
"William Allen Simpson" <wsimpson@greendragon.com>, nanog@merit.edu
From: David Bannister <dbannist@cisco.com>
At 03:50 PM 6/9/97 -0700, Justin W. Newton wrote:
>At 04:24 PM 6/9/97 GMT, William Allen Simpson wrote:
>>Speaking as the designer of the network portion of a couple of those
>>popular games, the applications are _not_ broken. Sending the IP
>>addresses is the only working method to dynamically join and redirect
>>multiplayer games.
>
>This is getting off-topic, but is there any reason that src address in the
>packet header doesn't work? Most (yes, all, I'm being silly) packets have
>the src address set in the header, and it seems as if it would be a
>reliable way to determine the uniqueness of a stream, seeing as that is how
>this strange proprietary protocol named IP does it. What am I missing?
>
In the cases he is referring to addresses are passed at the application
level from the client initiating the call. For example, here is a list of
popular programs that pass addressing information at that level:
ftp
cuseeme
irc
real audio
quake
NAT can break these applications and special handling must be done to make
them work.
>
>
>Justin W. Newton
>Senior Network Architect
>Priori Networks http://www.priori.net
>ISP/C, Director at Large http://www.ispc.org
>
>
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