I am using Checkpoint 4.1 at my office and trying to connect to another site with a Cisco VPN (4.0.4D). The traffic looks as though its going through fine but I cannot ping any server at the other site. If I dial out, and therefore bypass the Checkpoint firewall, then everything works fine. I do see a message in the firewall log that says IKE log: Error Occurred but there's no source or destination address. Anyone have any ideas?
I had some real fun and games getting this to work sometime back. I wrote a document on what needed doing. email me if you would like a copy. I assume you are doing a site to site ?