HKLM\SYSTEM\CurrentControlSet\Services\RemoteAccess\Authentication\Providers\
The {1AA7F83F-C7F5-11D0-A376-00C04FC9DA04} subkey stores configuration data for the RADIUS authentication provider.
This subkey also can contain a Servers subkey which, in turn, contains subkeys representing each RADIUS server used for RADIUS authentication. The server-specific subkeys store entries that apply only to the named server.
Tip
To configure a RRAS server to use RADIUS authentication, use Authentication Provider box on the Security tab in the Routing and Remote Access snap in.
Related Entries
{1AA7F841-C7F5-11D0-A376-00C04FC9DA04}
(Windows authentication provider subkey)
{1AA7F840-C7F5-11D0-A376-00C04FC9DA04}
(RADIUS accounting provider subkey)