Routing question...

[Jeremy Fowler]

Traceroute the path from each side and see where it stops. Do as Gerald
suggested and make sure ip_forward is enabled. Check to see if any firewall
rules/policies are set and turn them off.

On Redhat:

# service ipchains stop
or
# service iptables stop

> -----Original Message-----
> From: Rusty Brown [mailto:kujayhawkbb at yahoo.com]
> Sent: Wednesday, March 19, 2003 3:45 PM
> To: Jeremy Fowler
> Cc: kclug at kclug.org
> Subject: RE: Routing question...
>
>
> The Cisco router has a static route to the .11 network set up. It can
> hit the .11 interface on the Linux router, but not thru it to the .11
> client.
>
> As for the side note: A friend (who is less Linux savvy than I) has a
> classroom setup using this configuration. I was trying to help him get
> it working, and failed. :o( So, I'm turning to the group to straighten
> myself out. :o)
>
>
> --- Jeremy Fowler <jfowler at westrope.com> wrote:
> > No, I think he was talking about the routing table on the Cisco
> > router itself.
> > You need to let the Cisco router know how it can reach the
> > 172.17.11.0 network.
> > You tell it to send packets for 172.17.11.0 to 172.17.10.2 and not
> > it's external
> > default gateway (Internet).
> >
> > On a side note, why the Class B private IP addresses? I'm assuming
> > your using
> > them purely as example and not as actual addresses...
> >
> > > -----Original Message-----
> > > From: owner-kclug at marauder.illiana.net
> > > [mailto:owner-kclug at marauder.illiana.net]On Behalf Of Rusty Brown
> > > Sent: Wednesday, March 19, 2003 2:45 PM
> > > To: dt at xr7.org
> > > Cc: kclug at kclug.org
> > > Subject: Re: Routing question...
> > >
> > >
> > > Yes. There is a route to each 172.17.10. and 172.17.11. network
> > range
> > > with eth0 and eth1 as the interface to use. And a default route to
> > use
> > > 172.17.10.1 as the gateway.
> > >
> > >
> > > --- dt at xr7.org wrote:
> > > > On Wed, 19 Mar 2003, Rusty Brown wrote:
> > > > > Here's the "lab" setup. 2 linux boxes connected going thru a
> > Cisco
> > > > > router to get "outside". One linux box has 2 nics, the other 1.
> > The
> > > > 2
> > > > > nic box is routing (/proc/sys/net/ipv4/ip_forward = 1) for the
> > > > single
> > > > > nic box.
> > > > >
> > > > > Addresses are:
> > > > > Cisco router 172.17.10.1
> > > >
> > > > Do you have a route here pointing to 172.17.11.0/24 via the Linux
> > > > router?
> > > > You should have something like:
> > > > ip route 172.17.11.0 255.255.255.0 172.17.10.2
> > > >
> > > > dt
> > > >
> > > > --
> > > > Dean Troyer
> > > > dt at xr7.org
> > > >
> > >
> > >
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