Netscreen Remote not working behind DLINK DI 524 router

Hello,

I am facing a problem that Netscreen Remote not working behind DLINK DI
524 router.

Here is my setup.
ISP -- Cable Modem -- DLink 524 Router -- Laptop
I have a static IP from my ISP that I have configured my router.

When I connect to my Office VPN using Netscreen Remote, I am not able
to connect to the VPN.

I have tried enabling IPSec and PPTP. NAT is enabled on my router also.
Looks like that eventhough NAT is enabled my router sends IP assigned
by itself to the VPN and when the repsonse comes back its not able to
find my laptop. I have copied the Netscreen Remote Log at the end.

Any help will be great.

Regards,
Shubham

11-14: 21:32:11.648 My Connections\My-Connection - Attempting to
resolve Hostname (My-Connection.mycompany.com)
11-14: 21:32:11.788
11-14: 21:32:11.788 My Connections\My-Connection - Initiating IKE Phase
1 (Hostname=My-Connection.mycompany.com) (IP ADDR=)
11-14: 21:32:12.226 My Connections\My-Connection - SENDING>>>> ISAKMP
OAK AG (SA, KE, NON, ID, VID 6x)
11-14: 21:32:13.008 My Connections\My-Connection - RECEIVED<<< ISAKMP
OAK AG (SA, VID 3x, KE, NON, ID, HASH)
11-14: 21:32:13.305 My Connections\My-Connection - SENDING>>>> ISAKMP
OAK AG *(HASH, NOTIFY:STATUS_REPLAY_STATUS,
NOTIFY:STATUS_INITIAL_CONTACT)
11-14: 21:32:13.305 My Connections\My-Connection - Established IKE SA
11-14: 21:32:13.305 MY COOKIE a1 ba a0 de 1b 13 c9 db
11-14: 21:32:13.305 HIS COOKIE a1 c9 2d 1b ee c7 d5 e6
11-14: 21:32:13.696 My Connections\My-Connection - RECEIVED<<< ISAKMP
OAK TRANS *(HASH, ATTR)
11-14: 21:32:20.076 My Connections\My-Connection - RECEIVED<<< ISAKMP
OAK TRANS *(Retransmission)
11-14: 21:32:20.905 My Connections\My-Connection - SENDING>>>> ISAKMP
OAK TRANS *(HASH, ATTR)
11-14: 21:32:21.296 My Connections\My-Connection - RECEIVED<<< ISAKMP
OAK TRANS *(HASH, ATTR)
11-14: 21:32:21.296 My Connections\My-Connection - Received Private DNS
Address = IP ADDR=
11-14: 21:32:21.296 My Connections\My-Connection - Received Private Alt
DNS Address = IP ADDR=
11-14: 21:32:21.296 My Connections\My-Connection - Received WINS
Address = IP ADDR=
11-14: 21:32:21.296 My Connections\My-Connection - Received Alt WINS
Address = IP ADDR=
11-14: 21:32:21.296 My Connections\My-Connection - Received Private IP
Address = IP ADDR=
11-14: 21:32:21.296 Virtual Interface configured to use Def GW
11-14: 21:32:21.390 Failed to locate local interface to my laptop by router>.
11-14: 21:32:22.014 Virtual Interface constructed for local interface

11-14: 21:32:22.171 Virtual Interface added: by Office VPN>/255.255.255.255 on ISDN "SafeNet VA miniport".
11-14: 21:32:22.218 Unable to determine tunnel gateway.
11-14: 21:32:24.718 Interface lost: VPN>
11-14: 21:32:24.718 My Connections\My-Connection - SENDING>>>> ISAKMP
OAK TRANS *(HASH, ATTR)
11-14: 21:32:24.733 Filter table loaded.