Firewall-1

[FW-1] Routing or Nat issues

Subject: [FW-1] Routing or Nat issues
From: jc.etienne AT MONTLIGEON DOT FR
To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
Date: Wed, 26 Oct 2005 08:43:20 +0200
Hi,

We are using NGX60 and there are 3 interfaces on it :

External        eth0 216.108.193.205 (Internet)
Dmz             eth2 192.168.203.254 (for 192.168.203.0/24)
Internal        eth1 192.168.103.51 (for 192.168.103.0/24)

Internally, we have a host 192.168.103.52 which act as a gateway for
192.168.43.0/24
I add the route 192.168.43.0/24 using the gateway 192.168.103.52 on the
NGX60

I can ping a host on 192.168.43.0/24 from 192.168.103.0/24 and I can
initiate a terminal server connection. However, from 192.168.43.0/24 I am
just able to ping 192.168.103.51.

If I try to ping behind 192.168.103.51 (e.g 192.168.103.6) I get :

        Source:         192.168.103.6
        Destination:    192.168.43.94
        Information:    ICMP: Echo Reply
                        ICMP Type: 0
                        ICMP Code: 0
                        message_info: ICMP reply does not match a previous
request"...ICMP reply does not match a previous request"

If I try to initiate a terminal server session from 192.168.43.94 to
192.168.103.6, I get :

        Protocol:       tcp
        Service:        3718
        Source:         192.168.103.6
        Destination:    192.168.43.94
        Source Port:    Terminal_server (3389)
        Information:    TCP packet out of state: First packet isn't SYN
                        tcp_flags: SYN-ACK

In addition, I have declared in the topology for NGX that 192.168.43.0/24
as a internal network but nothing to do.
I am completely stuck on this problem and I'll appreciate some help.

Thanks, 

Jean-Christophe

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