From owner-freebsd-hackers@FreeBSD.ORG Mon Sep 8 14:00:52 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 85B5416A4DA; Mon, 8 Sep 2003 14:00:52 -0700 (PDT) Received: from lakemtao06.cox.net (lakemtao06.cox.net [68.1.17.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id E887843FE0; Mon, 8 Sep 2003 14:00:50 -0700 (PDT) (envelope-from mezz7@cox.net) Received: from mezz.mezzweb.com ([68.103.32.11]) by lakemtao06.cox.net (InterMail vM.5.01.06.04 201-253-122-130-104-20030726) with ESMTP id <20030908210050.LGBI7895.lakemtao06.cox.net@mezz.mezzweb.com>; Mon, 8 Sep 2003 17:00:50 -0400 To: Andreas Klemm References: <3F589E94.1080508@xwave.com> <20030905154646.GA59881@rot13.obsecurity.org> <20030906213428.GF29217@spc.org> <3F5A8FDB.3050507@newsguy.com> <20030907015510.GG29217@spc.org> <20030908202727.GA49862@titan.klemm.apsfilter.org> Message-ID: From: Jeremy Messenger Content-Type: text/plain; format=flowed; charset=utf-8 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Date: Mon, 08 Sep 2003 15:59:51 -0500 In-Reply-To: <20030908202727.GA49862@titan.klemm.apsfilter.org> User-Agent: Opera7.20/Linux M2 build 459 cc: freebsd-hackers@freebsd.org Subject: Re: PUzzling sshd behaviour X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Sep 2003 21:00:52 -0000 On Mon, 8 Sep 2003 22:27:27 +0200, Andreas Klemm wrote: > On Sun, Sep 07, 2003 at 02:55:10AM +0100, Bruce M Simpson wrote: >> On Sat, Sep 06, 2003 at 10:54:35PM -0300, Daniel C. Sobral wrote: >> > Bruce M Simpson wrote: >> > >On Fri, Sep 05, 2003 at 08:46:46AM -0700, Kris Kennaway wrote: >> > >>The fact that sshd requires reverse IP resolution is well-known >> > >>behaviour. It's probably the most common FAQ about sshd ("Why is my >> > >>login taking 60 seconds to present the password prompt?"). >> > > >> > >But what about: >> > > VerifyReverseMapping >> > > Specifies whether sshd should try to verify the remote >> host >> > > name >> > > and check that the resolved host name for the remote IP >> > > address >> > > maps back to the very same IP address. The default is >> ``no''. >> > >> > AFAIK, that means the reverse mapping result will not be held against >> > you. :-) >> >> This sounds like a bug. Does anyone else agree? > > Yes and I really needed this functionality in a project for 12 Suns... > > But it didn't work as expected from the description. > > And for me a functionality like being able to prevent reverse lookup > would be completely logical ... > > Result was to create about 20 /etc/hosts entries on every sun, to > prevent this 60 seconds timeout for our Out Of Band login via VPN > and from sun to sun etc etc My solution is to install and setup dnscache to do the local DNS cache. Cheers, Mezz > Andreas /// -- bsdforums.org 's moderator, mezz.