I was previously using another firewall software and simply by port forwarding port 1723 from the ADSL interface to a Windows Server attached to the LAN, we were able to VPN in. Since switching to Pfsense we are unable to VPN.
Lan Ip: 172.26.0.1 VPN Server Ip = 172.26.0.50
ADSL interface Router IP 192.168.2.253 In the router we DMZ everything to 192.168.2.11 which is the IP of the ADSL interface (192.168.2.253 being the gateway). We then add the rules in NAT to allow for SSH access etc. Other rules applied to this interface are working correctly.
However, the VPN is not working correctly. The usual screen appears, but gets stuck on verifying username and password. After a while I get error 806.
It mentions about GRE in the error message and I can see this in Pfsense in the Assign section of interfaces an option to add GRE, however, I am unsure exactly what details I need to supply here.
Here a some of my settings including NAT rules.
I currently have the Pfsense PPTP disabled.
Anyone help or info would be much appreciated.