I've a windows 2000 small business server set up with ISA enabled. Access to internet is via an ADSL router connected to a second network card. All works fine. Now I need to connect an external network connected via a second router ISDN (Zyxel 202) (ADSL is not serviced). The IP address of the server of the external network is 192.168.2.1 Local network configuration: NIC internal: 192.168.0.1 NIC internet: 10.0.0.1 ADSL router: 10.0.0.2 ISDN router: ?.?.?.? Range ip client address: 192.168.0.30 - 192.168.0.254 External network configuration: NIC internal: 192.168.2.1 ISDN router: ?.?.?.? Range ip client address: 192.168.2.30 - 192.168.2.254 Any help is much appreciated. Livio Bressan lbressan@xxxxxxxxx