From owner-freebsd-security Sun Jul 5 14:09:00 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA07877 for freebsd-security-outgoing; Sun, 5 Jul 1998 14:09:00 -0700 (PDT) (envelope-from owner-freebsd-security@FreeBSD.ORG) Received: from indigo.ie (nsmart@ts01-44.waterford.indigo.ie [194.125.139.107]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id OAA07711 for ; Sun, 5 Jul 1998 14:08:29 -0700 (PDT) (envelope-from rotel@indigo.ie) Received: (from nsmart@localhost) by indigo.ie (8.8.8/8.8.7) id WAA04673; Sun, 5 Jul 1998 22:03:07 +0100 (IST) (envelope-from rotel@indigo.ie) From: Niall Smart Message-Id: <199807052103.WAA04673@indigo.ie> Date: Sun, 5 Jul 1998 22:03:05 +0000 In-Reply-To: David Greenman "Re: bsd securelevel patch question" (Jul 2, 9:00am) Reply-To: rotel@indigo.ie X-Mailer: Mail User's Shell (7.2.6 beta(3) 11/17/96) To: dg@root.com, rotel@indigo.ie Subject: Re: bsd securelevel patch question Cc: "Allen Smith" , security@FreeBSD.ORG, njs3@doc.ic.ac.uk, dima@best.net, abc@ralph.ml.org, tqbf@secnet.com Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Jul 2, 9:00am, David Greenman wrote: } Subject: Re: bsd securelevel patch question > >On Jul 2, 7:10am, David Greenman wrote: > >> > >> Well, one thing that is wrong with this is that it is slow. I sure wouldn't > >> want my busy WWW server doing this for every connection that is made. > > > >It would only be necessary to do this for binds to ports < 1024. So it > >would just be checked every time a daemon started. > > Um, well, let's talk about FTP servers, then, since those do a privileged > bind() for every data connection that is estabilished (one per file transfer). This can be solved by using passive mode on the FTP server side, which is a good idea for security conscious sites anyhow. Niall -- Niall Smart. PGP: finger njs3@motmot.doc.ic.ac.uk FreeBSD: Turning PC's into Workstations: www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe security" in the body of the message