After a new firewall has been installed, devices cannot obtain a new IP address. Which of the following
ports should Matt, the security administrator, open on the firewall?
A.
25
B.
68
C.
80
D.
443
Explanation:
The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet
Protocol (IP) networks for distributing IP addresses for interfaces and services. DHCP makes use of port
68.
Incorrect Answers:
A: SMTP makes use of port 25.
C: HTTP makes use of port 80.D: HTTPS makes use of port 443http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol
http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers