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Remote access VPN with Cisco ASA and Micorsoft ISA

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Last Modified: 2011-09-20
Hi,

at the moment we have a Network using a Cisco ASA 5510 as firewall.

                                                     Internet
                                                           |
                                                           |
                                                           |
                                                    (public IP)
                                                       Firewall
                                                    (192.168.96.0 / 20)
                                                           |  
                                                           |
                                                           |
                                                          LAN

Now I want to integrate an Microsoft ISA Server 2006 behind the Firewall to use ist as firewall and proxy server. Also I like to use the server publishing feature. The Network layout I have in mind is this:

                                                     Internet
                                                           |
                                                           |
                                                    (public IP)
                                                       Firewall
                                                    (10.1.0.1)
                                                           |
                                                           |
                                                           |
                                                (10.1.0.2 or something)
                                                          ISA------------------DMZ (194.170.30.x)
                                                (192.168.0.1 / 20)
                                                           |
                                                           |
                                                          LAN
                                                           |
                                                           |                                                        
                                                Servers(Internal IP)

I my Test Lab Internet Access from internal LAN is working well.
I set up a Remote Access tunnel, and when I access via VPN I´m getting a IP of the 10.1.0.0 Network. The problem is, that Cisco ASA gives me the adress of ASA internal interface as Default Gateway. So I´m not able to Access the LAN.

Does anybody know how to tell Cisco to give VPN users another Gateway (external IP of ISA Server). Or how I have to chage the Network layout to dial in and access LAN.
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