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Date:      Thu, 6 Aug 1998 12:46:23 -0700 (PDT)
From:      Doug White <dwhite@resnet.uoregon.edu>
To:        Alex Helbig <alex@muse.org.au>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Source Routed packets
Message-ID:  <Pine.BSF.4.00.9808061244060.28098-100000@resnet.uoregon.edu>
In-Reply-To: <3.0.5.32.19980803151448.009f4a00@ada.somerville.qld.edu.au>

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On Mon, 3 Aug 1998, Alex Helbig wrote:

> Hi all,
> 
> I have 2.2.7-RELEASE installed in a box which will become a firewall.
> 
> I have rebuilt a kernel with IP_FORWARDING disabled between two ethernet
> interfaces.  I need to know whether this will also prevent forwarding of
> Source Routed IP Packets.

the IP_FORWARDING option is deprecated.  Use sysctl 
'net.inet.ip.forwarding' to control this behavior.

FreeBSD throws away Source-routed packets unless you enable sysctl
`net.inet.ip.accept_sourceroute' and maybe 'net.inet.ip.sourceroute'.

See `man sysctl' for information on using the sysctl interface.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major


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