Date: Tue, 21 May 1996 10:39:08 -0500 (CDT) From: "Brett L. Hawn" <blh@nol.net> To: Garrett Wollman <wollman@lcs.mit.edu> Cc: current@FreeBSD.ORG Subject: Re: freebsd + synfloods + ip spoofing Message-ID: <Pine.SOL.3.93.960521103733.26710B-100000@dazed.nol.net> In-Reply-To: <9605211527.AA32609@halloran-eldar.lcs.mit.edu>
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On Tue, 21 May 1996, Garrett Wollman wrote: > <<On Tue, 21 May 1996 07:21:14 -0500 (CDT), "Brett L. Hawn" <blh@nol.net> said: > > > For kicks some time ago I built a spoofer and I can tell you this much, > > creating at least a pseudo-random number generator for sequencing will stop > > a large # of the spoofers. > > Which is why this was introduced in FreeBSD many months ago. You'll have to pardon me if I don't see it, as part of the discussion we played with my spoofing utility and I found 2.2 -current just as easy to spoof as 2.0.5. I tried to spoof 3 linux boxes, 2 Solaris boxes, and one HP-UX box, all of which failed miserably, this tells me something very important.. the sequencing routines are still very easy to guess. Brett
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