Pete, a network administrator, is implementing IPv6 in the DMZ. Which of the following protocols must
he allow through the firewall to ensure the web servers can be reached via IPv6 from an IPv6 enabled
Internet host?

A.
TCP port 443 and IP protocol 46

B.
TCP port 80 and TCP port 443

C.
TCP port 80 and ICMP

D.
TCP port 443 and SNMP

Explanation:
HTTP and HTTPS, which uses TCP port 80 and TCP port 443 respectively, is necessary for Communicating
with Web servers. It should therefore be allowed through the firewall.
Incorrect Answers:
A: IP protocol 46 was designed to reserve resources across a network for an integrated services Internet.
C: Internet Control Message Protocol (ICMP) is a network health and link-testing protocol that is
commonly used by tools such as ping, traceroute, and pathping.
D: SNMP can be used to interact with various network devices to obtain status information, performance
data, statistics, and configuration details.

Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 42, 46, 47, 52