Anthony E. Greene wrote:
>
> I'm having routing trouble with a PPP connection to a Linux server using a
> Win95 client. The PPP connection works. I can ping the Linux box from the
> Win95 box. But I can't see anything past the Linux box.
Yup, almost definitely an IP forwarding problem -- unless it's a routing
problem.
>
> Is IPv4 Forwarding compiled into the RH5.1 kernel be default?
I think it's at least present as a module, but not activated by default
in the startup scripts.
>
> How can I check if my kernel includes IP forwarding?
>
$ cat /proc/sys/net/ipv4/ip_forward
If the file is there, then your kernel should have the ability to
forward IP. As for the switched on/switched off question:
0 = off
1 = on
> Assuming it does, do I have to do anything other than making sure
> /etc/sysconfig/network includes IPV4_Forward=true then run
> /etc/rc.d/init.d/network stop then start?
The syntax (at least on my boxen, I don't know if there are
alternatives) is 'FORWARD_IPV4=yes'.
And yeah, I think that's all you need to do; at least it's worked for
me.
If that still doesn't do the trick, and if you haven't already, look
into the 'proxyarp' option for pppd (mentioned in the pppd manpage).
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