Good Afternoon All,
I have a Cisco 2600 series router running IOS version 12.0(2a)T1, (fc1). I am trying to allow a Windows 2000 external client VPN to an internal Windows 2000 VPN server using PPTP. I have opened up the PPTP port, mapped from the external public address to the private internal address. I have modified the access lists to allow GRE.
When the Win2k client attempts to make a VPN connection, he never gets past the password verification stage. I use NETSTAT on the Win2k VPN server and notice the incoming PPTP connection from the outside, but the connection never successfully negotiates.
When I do a one to one mapping of an internal address with an external address, the VPN works fine, but then I'm stuck with an exposed computer.
Does anyone know how I can get this to work, and if not, if CISCO sells an IOS or add-in for my router to act as the VPN server?