A customer calls a technician asking for assistance setting up a software-based
firewall for a home computer. The computerconnects to a local Internet service
provide (ISP) for the purpose of sending and receiving e-mail.
Which of the following two ports will the technician open on the firewall to allow the
transfer of e-mail to and from the ISP?

A.
10 and 147

B.
25 and 80

C.
25 and 110

D.
80 and 193

Explanation:
TCP Port 25 – SMTP
TCP Port 110 – POP