NPS Server 

Gateway

If you must use MS-CHAPv2, you can enable NTLMv2 authentication by adding this registry entry:

1. Select Start > Run, type regedit in the Open box, and then select OK.
2. Locate and select the following registry subkey:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\RemoteAccess\Policy
3. On the Edit menu, point to New, and then select DWORD Value.
4. Type Enable NTLMv2 Compatibility, and then press ENTER.
5. On the Edit menu, select Modify.
6. In the Value data box, type 1, and then select OK.
7. Exit Registry Editor.