Core issue
User authentication has failed because:
- VPN Client user name and/or password is incorrect.
- VPN Client user name and/or password is missing from remote server, local database, or external database.
Resolution
- Check to see that the VPN Client user is supplying the correct username and password.
- Verify that the username and password are present in the database.
If you are using the VPN 3000 Concentrator as the remote server, you can verify the username and password. Select Configuration > System > Servers > Authentication, then select Authentication Server, and click Test. When prompted, enter the username and password.
If authentication is rejected, the username and password are not matching.
If you receive an authentication error ("No response from server"), continue to the next step.
- Verify that you have configured communication parameters for the authentication server properly. Also, ping the authentication server to verify connectivity.