RRAS VPN problem

[rwjean]

I am trying to implement a VPN PPTP server on Win2K server using RRAS in a workgroup. AD is not installed. The system has 2 NICs. The first one is connected directly to the internet and has a public IP address via DHCP. The second NIC is connected via another ISP using a Netopia router that is mapping public IPs to the private internal addresses it is assigning via DHCP. It has no security. At present this nic has a 192.168.1.27 address and a public address is mapped to it. My problem is when I try to connect using a Win2K pro workstation remotely through the 1st NIC, it begins authentication and then stops responding and gives a 721 error. Please advise.

 

[ChicagoTechNet]

quoted from

http://www.chicagotech.net/

Error 721: Remote PPP peer or computer is not responding. If you have tried many thing other people suggest like rebooting, reloading hardware and re-installing the VPN or dial in connection, you still get the same problem. I will suggest to check the router settings and make sure TCP Port 1723, IP Protocol 47 (GRE) are opened. Also make sure that the router has the PPTP enabled and not firewall block the traffic. On the RAS server, check the DHCP settings.

Robert Lin, MS-MVP, MCSE & CNE
Windows, Network, Internet, VPN, Routing and How to at

http://www.ms-mvps.com

 

[rwjean]

I will check the settings because I am using DHCP. I will change it to utilize a static address pool. In addition, can we basically disregard the second nic. I say that because the VPN is coming in through the first nic which does not have a router connected. It is directly connected to the cable modem.
My client just has two ISP connections. I stuck with the first because there is no router to go through.

 

[rwjean]

Also i know PPTP is utilizing port 1723 as well as GRE. If the problem is due to GRE, would it be beneficial to setup up L2TP? I am unsure as how to configure it. In addition, aren't certs required? If you know the steps please advise.