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Date:      Fri, 21 Jan 2000 00:39:44 -0600 (CST)
From:      Gene Harris <zeus@tetronsoftware.com>
To:        matt <matt@ARPA.MAIL.NET>
Cc:        FreeBSD-STABLE <stable@FreeBSD.ORG>
Subject:   Re: Restricting RST & Dropping SYN/FIN (was; stream.c)
Message-ID:  <Pine.BSF.4.10.10001210037290.620-100000@tetron02.tetronsoftware.com>
In-Reply-To: <Pine.BSF.4.21.0001210059470.5056-100000@w01.arpa-canada.net>

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On Fri, 21 Jan 2000, matt wrote:

>  
>  curious.. on 3.4-stable, cvsupped Dec. 29 1999, defaults/rc.conf has;
>  
>  TCP_DROP_SYNFIN and TCP_RESTRICT_RST, which point to:
>  
>  sysctl net.inet.tcp.drop_synfin and net.inet.tcp.restrict_rst, However:
>  
>  root[w01]:~# sysctl -w net.inet.tcp.restrict_rst=1
>  sysctl: unknown oid 'net.inet.tcp.restrict_rst'
>  root[w01]:~# sysctl -w net.inet.tcp.drop_synfin=1
>  sysctl: unknown oid 'net.inet.tcp.drop_synfin'
>  

I think you forgot to compile the options into your kernel.

options TCP_DROP_SYNFIN
options	TCP_RESTRICT_RST

Adding this should do the trick.

Gene



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