Date: Tue, 10 Jul 2001 19:38:59 +1000 (Australia/ACT) From: Darren Reed <avalon@coombs.anu.edu.au> To: crist.clark@globalstar.com (Crist Clark) Cc: freebsd-security@FreeBSD.ORG Subject: Re: FW: Small TCP packets == very large overhead == DoS? Message-ID: <200107100938.TAA13064@caligula.anu.edu.au> In-Reply-To: <3B4A53D7.287F47AF@globalstar.com> from "Crist Clark" at Jul 09, 2001 06:01:11 PM
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In some mail from Crist Clark, sie said: > > The TCP segment is everything in the IP payload. An SYN segment is a > TCP segment, but it carries no data and has a segment length of one (whee!). > I can see that clearly in the RFC, and I think we all cab agree on that. > However, I think that a SYN segment, which is all header, has a size greater > than one. It looks more like 24-or-so bytes typically... or maybe it does not. > I am looking for where (if anywhere) the specification comes out and says > that segment "size" is the same as "length." Why isn't the MSS called the MSL > after the RFC has gone to such pains to define "length?" Why can't a SYN segment be a TCP segment of length 0 ? (with one phantom byte) Darren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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