Re: IP forwarding

Jim Flowers (jflowers@ezo.net)
Wed, 30 Sep 1998 14:52:40 -0400

Check to see that it really is on "sysctl -a | grep ip.for" should be 1
Check your netmasks on both subnets to see that they match the corresponding
interface else they won't talk to each other above the data link layer.

-----Original Message-----
From: Neil Moore-Smith <nms@crescendo.ltd.uk>
To: 'Linux-Net Mailing List' <linux-net@vger.rutgers.edu>
Date: Wednesday, September 30, 1998 2:15 PM
Subject: IP forwarding

>Hi all again
>
>After the amazing response to my query about two network adapters, I
>thought I would venture another!
>
>The two network cards are working. One is 194.200.135.12, the other is
>192.168.0.1. From the machine itself, "GW", I can send and receive to both
>networks. But it does not appear to be forwarding/routing packets from
>other machines across the two interfaces. I checked the routing tables on
>all machines, they are OK.
>
>I compiled the kernel with IP Forwarding ON, and Firewall OFF. The routing
>daemon is running.
>
>I want to use the machine as a packet filtering router, a non-proxying
>gateway. What am I missing? Are some of the kernel config settings mutually
>exclusive?
>
>Thanks in advance. I'm a quick learner, and hopefully I'll soon be able to
>put something back into the forum!
>
>Neil
>
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