From owner-cvs-all Tue Aug 21 19:59:33 2001 Delivered-To: cvs-all@freebsd.org Received: from obsecurity.dyndns.org (adsl-63-207-60-7.dsl.lsan03.pacbell.net [63.207.60.7]) by hub.freebsd.org (Postfix) with ESMTP id 3EDA437B413; Tue, 21 Aug 2001 19:59:21 -0700 (PDT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id BB5C266D1C; Tue, 21 Aug 2001 19:59:20 -0700 (PDT) Date: Tue, 21 Aug 2001 19:59:20 -0700 From: Kris Kennaway To: Mike Silbersack Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/netinet tcp_input.c tcp_seq.h tcp_subr.c tcp_timer.c tcp_usrreq.c tcp_var.h Message-ID: <20010821195920.A23850@xor.obsecurity.org> References: <200108220058.f7M0wGf97070@freefall.freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="3V7upXqbjpZ4EhLz" Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200108220058.f7M0wGf97070@freefall.freebsd.org>; from silby@FreeBSD.org on Tue, Aug 21, 2001 at 05:58:16PM -0700 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG --3V7upXqbjpZ4EhLz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 21, 2001 at 05:58:16PM -0700, Mike Silbersack wrote: > silby 2001/08/21 17:58:16 PDT >=20 > Modified files: > sys/netinet tcp_input.c tcp_seq.h tcp_subr.c=20 > tcp_timer.c tcp_usrreq.c tcp_var.h=20 > Log: > Much delayed but now present: RFC 1948 style sequence numbers Yay! > In order to ensure security and functionality, RFC 1948 style > initial sequence number generation has been implemented. Barring > any major crypographic breakthroughs, this algorithm should be > unbreakable. Except by brute force. A 32-bit sequence number just isn't naturally very resistent to guessing, and on a fast connection, under favourable circumstances, an attacker could simply cycle through them all. Kris --3V7upXqbjpZ4EhLz Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7gyAIWry0BWjoQKURAngFAKC55ZJ/2g9ZU+ZfOqLIf6e0SGUmzgCfU9dk JcRwHtxLwkhpmGPZWDi7Nn0= =6zwV -----END PGP SIGNATURE----- --3V7upXqbjpZ4EhLz-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message