Date: Sat, 22 Nov 1997 12:04:57 PST From: Bill Fenner <fenner@parc.xerox.com> To: Don Lewis <Don.Lewis@tsc.tdk.com> Cc: Darren Reed <avalon@coombs.anu.edu.au>, jas@flyingfox.com, robert@cyrus.watson.org, security@freebsd.org Subject: Re: new TCP/IP bug in win95 (fwd)g Message-ID: <97Nov22.120508pst.177476@crevenia.parc.xerox.com> In-Reply-To: Your message of "Sat, 22 Nov 97 03:25:54 PST." <199711221125.DAA17122@salsa.gv.tsc.tdk.com>
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The one caveat is that it means that an old SYN/ACK from a connection that was established in the other direction could assassinate a new connection. But sequence numbers would have to have wrapped, and TCP assumes that you don't get old duplicates after the sequence numbers have wrapped anyway, so I suspect this is safe. Bill
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