hi all. i have 2 servers, which have both 2 NIC's, 1 for the ADSL connection to the modem, and one for the LAN network. So the modem / router has 2 incoming connections, it provides internet for 2 networks. Each server has its own ip (192.168.1.65 and 192.168.1.66) in the modem. But how to set up vpn now for both servers? Because they share the same internet, both have the same outside ip (checked with www.whatismyip.org), so if i set the PPTP port open for both ip's, how to set up the VPN on the client to let it know that it should login in server1 or server2?

Hi, Without a second public IP, I don't think that this will be possible. If you use both of them to perform authentication for all incoming users, then you can probably use NLB, http://blogs.technet.com/b/rrasblog/archive/2009/07/02/configuring-network-load-balancing-nlb-cluster-of-vpn-servers.aspx -- Mike Burr

If you are trying to provide an HA or Fail-over solution for VPN services, then do check out Mike's link. However, If this is something like you have one internet shared by two companies, I don't think you are going to be successful in designing something by using 1 public IP address. If your modem supports multiple public IPs, you best bet is to contact the ISP and have two IPs assigned. You can then do port forwarding based on the public IP address. Visit: anITKB.com, an IT Knowledge Base.

thank you for your answer.