[105202] in North American Network Operators' Group

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Re: DNS problems to RoadRunner - tcp vs udp

daemon@ATHENA.MIT.EDU (Simon Leinen)
Sat Jun 14 17:24:51 2008

From: Simon Leinen <simon.leinen@switch.ch>
To: Jon.Kibler@aset.com
In-Reply-To: <4852C1CE.2020804@aset.com> (Jon Kibler's message of "Fri, 13 Jun
	2008 14:51:58 -0400")
Date: Sat, 14 Jun 2008 23:23:44 +0200
Cc: nanog@merit.edu
Errors-To: nanog-bounces@nanog.org

Jon Kibler writes:
> Also, other than "That's what the RFCs call for," why use TCP for
> data exchange instead of larger UDP packets?

TCP is more robust for large (>Path MTU) data transfers, and less
prone to spoofing.

A few months ago I sent a message to SwiNOG (like NANOG only less
North American and more Swiss) about this topic, trying to explain
some of the tradeoffs:

http://www.mail-archive.com/swinog@lists.swinog.ch/msg02612.html

Mostly I think that people "approaching this from a security
perspective only" often forget that by fencing in the(ir idea of the)
current status quo, they often prevent beneficial evolution of
protocols as well, contributing to the Internet's "ossification".
-- 
Simon.


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