I believe that you are able to telnet and browse to the AP without getting authenticated by the Radius server if you are wireless. You would have to setup your AP to only allow you into the device for management so that not everyone could get into it and change the configuration. You would need to do this on the user management page of the AP under the security setup page. If you have no wireless connection due to the radius server, you should be able to hit the AP via a wired PC on the network.