Firewall-1

[FW-1] Problems with Routing/Encryption in Checkpoint-VPN

Subject: [FW-1] Problems with Routing/Encryption in Checkpoint-VPN
From: "Kunz, T" <Thomas.Kunz AT T-SYSTEMS DOT COM>
To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
Date: Thu, 29 Jan 2004 17:04:27 +0100
Hi all,

i've got a VPN between 2 Nokia Clusters here (GW-A & GW-B).

The first ones, the GW-A, are the Central-GWs of a Star-Topology VPN.
LAN-A with Net 10.1.0.0/24 is connected directly.

The Second ones, the GW-B, are the Satelite-GWs.
LAN-B with Net 10.2.0.0/24 is connected directly.
LAN-C with Net 10.3.0.0/24 is connected via a Router to LAN-B.

Now, the Problem is that i can't communicate with the Hosts in 10.3.0.0/24 in 
LAN-C from LAN-A behind GW-A (10.1.0.0/24). Same thing in the other direction!

Can anyone give please advice?
I checked, the Routing, Ecryption-Domain, Anti-Spoofing and Rulebase of Course 
already.
Maybe there is problem with the encryption of the packets or Network-Adresses?

When i try a ping (echo-req) from 10.1.0.1 to 10.3.0.1 i see the Packet coming 
in at the LAN-Interface of GW-A. At LAN-Interface of GW-B, i see the Packets 
(echo-req) coming in and the answers (echo-rep) coming back from host 10.3.0.1.
But the echo-replies do not reach the LAN-Interface of GW-A.

A Connection from LAN-B to LAN-A can be done without problems. Same thing in 
the other direction.

Regards

Thomas Kunz

T-Systems International GmbH
Global Network Factory, Network & Service Operations Munich
Fon: +49 89 54754 416 ; Fax: +49 89 54754 491
E-Mail: Thomas.Kunz AT t-systems DOT com

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