[Serusers] SER performance degrades dramatically when invalid users send REGISTER messages continuously

[Juha Heinanen]

Klaus Darilion said:

> If the username/password is wrong, the Radius server should reply
> with Authentication-Reject, thus the sip proxy should reply with
> 401/403. This should not need more time then the reply for a successful
> authentication.

depends on the radius server and its reject delay.  it would be a good
idea to have reejct delay built in to ser so that it would apply no matter
what kind of authentication is in question.

-- juha