From owner-freebsd-security Sat Sep 26 07:43:46 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA09529 for freebsd-security-outgoing; Sat, 26 Sep 1998 07:43:46 -0700 (PDT) (envelope-from owner-freebsd-security@FreeBSD.ORG) Received: from thing.dyn.ml.org (dyn1-tnt13-209.detroit.mi.ameritech.net [199.179.188.209]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id HAA09501 for ; Sat, 26 Sep 1998 07:43:42 -0700 (PDT) (envelope-from mcdougall@ameritech.net) Received: from ameritech.net (bsdx [192.168.1.2]) by thing.dyn.ml.org (8.8.8/8.8.7) with ESMTP id KAA18354 for ; Sat, 26 Sep 1998 10:43:35 -0400 (EDT) (envelope-from mcdougall@ameritech.net) Message-ID: <360CFD95.1A0B1ED2@ameritech.net> Date: Sat, 26 Sep 1998 10:43:33 -0400 From: Adam McDougall X-Mailer: Mozilla 4.06 [en] (X11; I; FreeBSD 3.0-BETA i386) MIME-Version: 1.0 To: security@FreeBSD.ORG Subject: Changing 3-way handshakes to prevent port scans Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I know someone who has linux patches to alter 3-way handshakes so a 'strobe' portscan returns no open ports, yet normal tcp communication seems unhindered, does anyone have any patches for FreeBSD to do the same? If the patches for linux might help I could attempt to dig them up. Thanks To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message