Date: Fri, 06 Jun 1997 12:09:35 -0700 (PDT) From: Simon Shapiro <Shimon@i-Connect.Net> To: Vadim Kolontsov <vadim@tversu.ac.ru> Cc: security@FreeBSD.ORG Subject: Re: sequence predictability (fwd) Message-ID: <XFMail.970606120935.Shimon@i-Connect.Net> In-Reply-To: <19970606091536.08429@tversu.ac.ru>
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Hi Vadim Kolontsov; On 06-Jun-97 you wrote: > On Thu, Jun 05, 1997 at 09:26:31AM -0400, Robert N Watson wrote: > > > > Having seen this post on the ntbugtraq mailing list, I was wondering > how > > preditcabkle sequence numbers in FreeBSD TCP connections were.. And is > > this an accurate measurement? > > > > Thanks > > > > How about implementing random choosing of start TCP sequence number? > Of course, it need crypotographicaly strong random numbers generator.. > I think it will help a lot against TCP seq.numbers predictability > attack. Good Idea. /dev/rand, setup properly produces very good results. Simon
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