From owner-freebsd-questions Tue Jun 25 17:36:58 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mailsrv.otenet.gr (mailsrv.otenet.gr [195.170.0.5]) by hub.freebsd.org (Postfix) with ESMTP id E4F0937B437 for ; Tue, 25 Jun 2002 17:36:25 -0700 (PDT) Received: from hades.hell.gr (patr364-a27.otenet.gr [195.167.109.59]) by mailsrv.otenet.gr (8.12.3/8.12.3) with ESMTP id g5Q0aE42016605; Wed, 26 Jun 2002 03:36:17 +0300 (EEST) Received: from hades.hell.gr (hades [127.0.0.1]) by hades.hell.gr (8.12.4/8.12.4) with ESMTP id g5Q0aDeC007016; Wed, 26 Jun 2002 03:36:13 +0300 (EEST) (envelope-from keramida@ceid.upatras.gr) Received: (from charon@localhost) by hades.hell.gr (8.12.4/8.12.4/Submit) id g5Q0Xf1n006999; Wed, 26 Jun 2002 03:33:41 +0300 (EEST) (envelope-from keramida@ceid.upatras.gr) Date: Wed, 26 Jun 2002 03:33:40 +0300 From: Giorgos Keramidas To: Jon Noack Cc: pcasidy@casidy.com, freebsd-questions@FreeBSD.ORG Subject: Re: Amount of FreeBSD servers is decreasing in servers statistics Message-ID: <20020626003340.GA6851@hades.hell.gr> References: <20020625012123.300.h001.c015.wm@mail.compgeek.com.criticalpath.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020625012123.300.h001.c015.wm@mail.compgeek.com.criticalpath.net> X-Operating-System: FreeBSD 5.0-CURRENT i386 X-PGP-Fingerprint: C1EB 0653 DB8B A557 3829 00F9 D60F 941A 3186 03B6 X-Phone: +30-944-116520 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 On 2002-06-25 01:21 +0000, Jon Noack wrote: > > Does anybody have a clue? > Already been said, but I'd just like to echo that every FreeBSD box I've > upgraded to 4.6 has shown up as unknown. New versions of OSs always seem to > confuse detection programs. Another program that acts like this is nmap. > Next version almost always detects it correctly, though. Just FYI, Another common culprit that confuses programs like nmap or the Netcraft detection tests is: # sysctl -a | grep blackhole net.inet.tcp.blackhole: 2 net.inet.udp.blackhole: 1 The blackhole(4) manpage explains in detail why these two sysctls can cause the `confusion'. - Giorgos To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message