L2TP VPN server Windows RRAS 2012R2 confirmed working with a Windows Client and also an Ipad. Confirmed locally remotely.
The Android client cannot connect. The event logs on the Windows RRAS VPN server say that:
The connection was prevented because of a policy configurd on your RAS/VPN server. Specifically, the authentication method used by the server to verify your username and password may not match the authentication method configured in your connection profile.
How do I configure to allow Android L2TP VPN clients? Any help would be appreciated. It doesn't appear to be straightforward to allow specific auth/ciphers on the Windows vpn server.