Date: Fri, 6 Sep 2002 13:10:48 -0700 From: Kris Kennaway <kris@obsecurity.org> To: "Marc G. Fournier" <scrappy@hub.org> Cc: freebsd-questions@freebsd.org, info@netcraft.com, webmaster@netcraft.com Subject: Re: Netcraft no longer sees FreeBSD ... ? Message-ID: <20020906201048.GB77907@xor.obsecurity.org> In-Reply-To: <20020906151222.T72523-100000@earth.hub.org> References: <20020906151222.T72523-100000@earth.hub.org>
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--gj572EiMnwbLXET9 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 06, 2002 at 03:21:51PM -0300, Marc G. Fournier wrote: > Starting around the middle of June, Netcraft started to report my > servers as OS: unknown ... and no longer reporting uptime values ... >=20 > From what I've seen in posts by other FreeBSDer's, this seems to > be a relatively common thing, with someone mentioning it had to do with a > recent upgrade @ netcraft ... >=20 > So: >=20 > Does anyone know why Netcraft can no longer detect FreeBSD? Is it > an OS version issue? Or an Apache issue? Probably some IP stack behaviour change that causes it to no longer have the same 'fingerprint' (cf nmap's OS detection). They would need to update their detection algorithm with the new fingerprint. > Does anyone know what Netcraft uses to determine uptime? RFC 1323 TCP extensions, I believe. Kris --gj572EiMnwbLXET9 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iD8DBQE9eQvIWry0BWjoQKURAkgJAJsHQc3ftBxu2pstOBnzrrbFJAr03gCgq8m5 BmKX9lm2uED8yrMIhtlpJ4Q= =11JY -----END PGP SIGNATURE----- --gj572EiMnwbLXET9-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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