I use a Pre-shared key on the VPN Server and I can Connect to in LAN environment using the Local IP but I cannot Use the WAN IP internally nor externally, and I have 1701, 4500 and 500 ports forwarded, I even tried putting the server in DMZ buy didn't help.

On the Other hand the PPTP works flawless as it did on my previous Windows server 2003.

What would be wrong here,

Also I am trying to have SSTP Connections fixed up after L2TP is resolved.

Thank you

Hi,

Firstly, please check the firewall filter rules to make sure that all traffic is allowed on all interfaces in the router. 

In addition, did you recieve any related error message on the VPN server or client?

Best regards,

Susie