Thanks for the quick reply. Currently the two CIPE machines can't even ping
each other. This problem just started today. If I do a UDP port scan of
either system running CIPE should the CIPE port show up? Currently I have
everything set to use port 7777 but an nmap scan (-sU option) doesn't
reveal this port. I tried this both with iptables started and stopped.
Like I said earlier I was able to ping between the CIPE connection today,
but I made some changes to the iptables and did a restart and now can't.
The connection doesn't work with iptables stopped though so I am assuming
that that is not the problem.
----- Original Message -----
From: "Peter van den Heuvel" <peter,AT,bank-connect,DOT,com>
Sent: Tuesday, August 26, 2003 7:03 PM
Subject: Re: cipe/router
> > I have a LAN of windows computer that are connected to the Internet
> > through a computer running Redhat 9 acting as a router using NAT. I am
> > trying to connect an external Redhat 9 computer into the LAN using a
> > CIPE VPN connection to the router. At one point I actually had the VPN
> > connection between the external computer and the router working, but
> > could not ping the internal network from the external computer. After
> > messing with my iptables thinking that was the reason I couldn't get to
> > the internal network, I managed lose the ability to connect the external
> > computer to the router through the VPN. Does anyone know of a
> > comprehensive tutorial for doing the about scenario? I hate to waste
> > everyone's time with questions if there is a tutorial I can be pointed
> Don't be confused by the fact that you're using cipe. It's all generic
> networking knowledge, not specific to cipe:
> - cipe works over some network; usually Internet.
> - make sure the two cipe machines can ping oneanother.
> - disable all iptables stuff (allow all for input and output).
> - bring up cipe and make sure you can ping the other end-point.
> - now try to ping something beyond the endpoint.
> If the last step does not work, you simple have a route problem:
> you must add a route to the remote network on the local cipe machine,
> setting the remote cipe machine as the gateway. Make sure to only use
> the "private addresses". All IP's to the "Internet" are irrelevant here.
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