Given the log output:
Max 15 00:15:23.431 CRT: #SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: msmith]
[Source: 10.0.12.45]
[localport: 23] at 00:15:23:431 CET Sun Mar 15 2015
Which of the following should the network administrator do to protect data security?

A.
Configure port security for logons

B.
Disable telnet and enable SSH

C.
Configure an AAA server

D.
Disable password and enable RSA authentication

Explanation: