Firewall-1

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

Subject: Re: [FW-1] Problems with Routing/Encryption in Checkpoint-VPN
From: "Moody, Thomas (Contractor) (DDC)" <thomas.moody AT DLA DOT MIL>
To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
Date: Thu, 29 Jan 2004 12:49:26 -0500
Thomas,

How is the LAN-C and LAN-B networks phyically tied together?  You mentioned
that there is a router for the LAN-C network.  Is the route configured in
GW-B pointing to the correct default gateway [that router] for LAN-C?  If
so, can you ping the LAN-C from the Nokia Cluster if login to it on the
command line?  Can you ping the Nokia Cluster from the router?  If not, then
you may have a routing issue.  Do you have referrees setup for the clusters
at both sites and have filters to allow the ICMP for the referrees?  With a
little more info, I may be able to help you.  I've done a lot of work with
the CC500 and CC2500's.  So, if you want to share a little more info... I'll
be glad to do what I can.

Anyway, these are all things to take into consideration.

Thomas G. Moody
Sr. Network Security Admin
Thomas.Moody AT dla DOT mil

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


·  -----Original Message-----
·  From: Kunz, T [mailto:Thomas.Kunz AT T-SYSTEMS DOT COM]
·  Sent: Thursday, January 29, 2004 11:04 AM
·  To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
·  Subject: [FW-1] Problems with Routing/Encryption in Checkpoint-VPN
·
·  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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