From owner-freebsd-questions  Sun Sep 12 12:45:15 1999
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Date: Sun, 12 Sep 1999 16:49:52 +0100
From: Ben Smithurst <ben@scientia.demon.co.uk>
To: Dag-Erling Smorgrav <des@flood.ping.uio.no>
Cc: freebsd-questions@FreeBSD.ORG, freebsd-security@FreeBSD.ORG
Subject: Re: How to prevent motd including os info
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References: <4.2.0.58.19990911151659.00aa8d60@ns1.digicomsystems.net> <19990912012524.B41509@lithium.scientia.demon.co.uk> <xzpn1usmka2.fsf@flood.ping.uio.no>
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Dag-Erling Smorgrav wrote:

> Ben Smithurst <ben@scientia.demon.co.uk> writes:
>
>> Note that people can still use nmap or something to guess at your OS.
>
> # ipfw add 1 deny tcp from any to any in tcpflags syn,fin
>
> No they can't.

Thanks, I didn't know about that. I'll try to remember it though.

-- 
Ben Smithurst            | PGP: 0x99392F7D
ben@scientia.demon.co.uk |   key available from keyservers and
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