Date: Sat, 02 Oct 2010 23:15:47 +0200 From: Andre Oppermann <andre@freebsd.org> To: Jordi Espasa Clofent <jespasac@minibofh.org> Cc: freebsd-net@freebsd.org Subject: Re: TCP Message-ID: <4CA7A103.3050000@freebsd.org> In-Reply-To: <4CA6FF9A.9090502@minibofh.org> References: <4CA6FF9A.9090502@minibofh.org>
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On 02.10.2010 11:47, Jordi Espasa Clofent wrote: > Hi all, > > I've read this interesting article: > http://www.packetstan.com/2010/09/openbsd-timestamps.html > > The question is simple > > żIs there some way in FreeBSD to randomize the TCP timestamps as OpenBSD does by default? I guess > some sysctl statement should do it, but I don't know. The timestamps on FreeBSD for passive open are randomized as long as you use SYN cookies (enabled by default). For passive open they are not (yet) randomized. -- Andre
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