Refer to the exhibit.

The exhibit shows the configuration of a Self IP with:

Port Lockdown: Allow Custom

A Custom List that includes the following TCP ports:

443

22

Meaning of these ports:

TCP 443 → HTTPS (TMUI — web-based management)

TCP 22 → SSH (command-line remote access)

No other TCP, UDP, or protocol entries are listed; therefore, only these two services are allowed to reach the BIG-IP via this Self IP.

Evaluating the answer choices:

Option

Service

Port

Allowed?

FTP

TCP 21

Not listed

Not allowed

SSH

TCP 22

Listed

Allowed

Telnet

TCP 23

Not listed

Not allowed

Thus, SSH is the only traffic permitted through this Self IP configuration.