From owner-freebsd-questions Tue Apr 2 19:31:17 2002 Delivered-To: freebsd-questions@freebsd.org Received: from earth.hub.org (earth.hub.org [64.49.215.11]) by hub.freebsd.org (Postfix) with ESMTP id 779FB37B400 for ; Tue, 2 Apr 2002 19:31:12 -0800 (PST) Received: from localhost.localdomain (earth.hub.org [64.49.215.11]) by localhost (Postfix) with ESMTP id 35EF1103472; Tue, 2 Apr 2002 23:31:07 -0400 (AST) Received: from earth.hub.org (earth.hub.org [64.49.215.11]) by earth.hub.org (Postfix) with ESMTP id D0F3910338F; Tue, 2 Apr 2002 23:31:06 -0400 (AST) Date: Tue, 2 Apr 2002 23:31:06 -0400 (AST) From: "Marc G. Fournier" To: Christopher Schulte Cc: freebsd-questions@freebsd.org Subject: Re: Netcraft survey ... what ports? In-Reply-To: <5.1.0.14.0.20020402210936.02b8edf8@pop3s.schulte.org> Message-ID: <20020402232731.Y2337-100000@mail1.hub.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG # sysctl net.inet.tcp.rfc1323=1 net.inet.tcp.rfc1323: 1 -> 1 4.5-STABLE FreeBSD 4.5-STABLE #6: Mon Mar 25 21:01:05 CST 2002 I'm not sure at what point it stopped though ... I am sitting behind a Cisco PIX, but I also know it was working, and we haven't changed any rules on the PIX since we installed it ... Any idea on how it detects the OS? Righ tnow, I have all ports in inetd.conf disabled, which I believe is the default with FreeBSD now ... do some of those have to be open'd for the detection to work? Would be a shame for 'FreeBSD usage' to drop in netcraft stats as ppl upgrade to the more recent versions :( On Tue, 2 Apr 2002, Christopher Schulte wrote: > At 11:01 PM 4/2/2002 -0400, Marc G. Fournier wrote: > > >Morning all ... > > > > Does anyone know what ports need to be open for netcraft to > >determine OS and uptime? My host used to record properly, now the OS is > >listed as 'unknown' and no uptime reports show up :( > > Netcraft looks at the actual TCP packets sent by the Operating System. > > If you have RFC 1323 extensions on, it should detect your uptime. > > tcp_extensions="YES" # Set to NO to turn off RFC1323 extensions. > > I don't know why they can't detect your OS, however. What version of > FreeBSD are you running, and do you have a firewall or other device that > might somehow mask the results? > > >Thanks ... > > -- > Christopher Schulte > http://www.schulte.org/ > Do not un-munge my @nospam.schulte.org > email address. This address is valid. > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message