The RAS logs on a server show 100 errors in a two minute time period from an attempt to access an account. The error log shows unknown username or password. Which of the following is this an example of?

A.
The local firewall is blocking GRE packets.

B.
An unauthorized attempt to access the server.

C.
The end users ISP is having issues with packet loss.

D.
One of the users forgot their password and kept trying to login.