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Re: [K12OSN] ip forwarding


What happens if you run:

   traceroute -n 192.168.0.xxx

on the server ?

Do the packets go in the right direction ?

Which machine are you turning on ip_forwarding ?

Does the machine you are pinging know how to get
packets back to 216.n.m.xxx ?

When you say 'no go' on the ping, what do you get ?  An error?
or does it just hang ?

Jim McQuillan
jam Ltsp org

On Fri, 19 Apr 2002, Julius Szelagiewicz wrote:

> Paul,
> 	going in is precisely what i need to do. Say, i have a server with
> puplic address of 216.n.m.210 sitting on my internal (firewalled) network
> and it runs terminals on network. I need to be able to access
> a device at 192.168.0.xxx from 216.n.m.xxx. this machine knows how to
> acess the 192.168.0 network: route add net 192.168.0 216.n.m.210 1 takes
> care of that. now i need the server to pass the packets in (and out). i
> need to be able to ping 192.168.0.xxx from 216.n.m.xxx. For the time
> being, no joy. the echo 1 > /proc/sys/net/ipv4/ip_forwarding changes
> value, but the ping still doesn't go through. thanks, julius
> On Thu, 18 Apr 2002, Paul Nelson wrote:
> > Wait a minute guys...
> >
> > He wants to go from the outside TO the inside. That's a different question.
> > IS that what you're trying to do Julius?
> >
> > If so then I'm not sure how to do that. Perhaps some special routing tables
> > in your firewall... Sounds like a good stumper for the list!
> >
> > If you just want to make sure that all private ip based machines on your
> > K12LTSP network are able to go OUT then make sure that /etc/rc.d/init.d/nat
> > is on:  "/etc/rc.d/init.d/nat start"
> >
> > ;-) Paul
> >
> > > Dear Listers,
> > > silly question: how do I enable ip forwarding in the k12os server?
> > > i need to be able to get to a device on private side from the public side.
> > > i didn't even think about it, since this is default on the unices i work
> > > with. julius
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