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Date:      28 Jul 1999 10:56:11 +0200
From:      Dag-Erling Smorgrav <des@yes.no>
To:        Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Cc:        Dag-Erling Smorgrav <des@yes.no>, net@FreeBSD.ORG
Subject:   Re: TCP/IP hardening
Message-ID:  <xzpyag19mqc.fsf@des.follo.net>
In-Reply-To: Garrett Wollman's message of "Tue, 27 Jul 1999 22:50:50 -0400 (EDT)"
References:  <xzpn1wjb1o2.fsf@des.follo.net> <199907280250.WAA06009@khavrinen.lcs.mit.edu>

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Garrett Wollman <wollman@khavrinen.lcs.mit.edu> writes:
> <<On 26 Jul 1999 22:23:41 +0200, Dag-Erling Smorgrav <des@yes.no> said:
> >  * net.inet.tcp.restrict_rst: if set to 1, do not emit TCP RST
> >    packets. Conditional on the TCP_RESTRICT_RST kernel option, which
> >    defaults to off.
> Why would you want to break the TCP implementation?

You've never run an IRC server, have you?

> >  * net.inet.tcp.drop_synfin: if set to 1, drop TCP packets with both
> >    the SYN and FIN options set. Conditional on the TCP_DROP_SYNFIN
> >    kernel option, which defaults to off.
> Again, why would you do that?  If it bothers you so much, then go
> hide behind a firewall.

Eats CPU.

DES
-- 
Dag-Erling Smorgrav - des@yes.no


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