topic Hi,The error showing that the in Network Access Control

Auth type not supported by External DB

ruben.montes — Sun, 10 Mar 2019 21:24:08 GMT

Hello,

we have configured authentication with AD for PPP access.

If the user exists in the ACS database, we have selected the option to go to search the password to the Windows database.

When we try to access with one of these users, we got this error:

"Auth type not supported by External DB".

In the other hand, when the user it is not in the database, it works...

Any idea which could be the problem?

Regards,

Ruben

Re: Auth type not supported by External DB

will.shaw — Mon, 12 Dec 2005 13:11:40 GMT

This error message usually means that the authentication protocol you are using isn't configured within your AD. Try changing to a different protocol to check, or alter the AD configuration.

Hi,The error showing that the

abwahid — Mon, 09 Jun 2014 12:50:05 GMT

Hi,

The error showing that the authentication protocol is not supported by the external DB.

Looking at a trace of the RADIUS packets will tell you what protocol is being used.

you cannot use CHAP against Windows/AD

Strongest recommended PPP user authentication methods — EAP-TLS or MS-CHAP v2.

use above methods and check.