problems with 2 NICS on a 2003 server

[dennishixson]

Here is the deal.. I have a CSU|DSU from the local ISP, the CSU\DSU is connected to a linksys hub (the hub has DHCP disabled). From the hub there is a cable doing to the external port on the firewall. The other port on the firewall is going to the internal network switch. Internet is running fine. Then, I have a Windows 2003 server with 2 NIC’s. NIC #1 has a internal IP address and is connected to the internal network switch. The gateway is the IP address of the firewall (192.168.1.201). All is running fine. Here is the problem, I want some other offices to be able to VPN via RRAS on the Windows 2003 server. So, on the 2nd nic on the windows 2003 server, I plug a cable from NIC #2 to the linksys hub, and assign another public IP address\gateway\subnet\dns provided by the ISP. ( same gateway\sub\dns as on the firewall). When I enable the 2nd nic on the server, internet goes down on the server. If I disable the 2nd nic everything starts running fine again.



I would rather not have to put another box up just for VPN… can you think of what may be causing this?

 

[anthonymel]

Is IP forwarding turned on for the server?

http://support.microsoft.com/default.aspx?scid=kb;en-us;323339

Anthony