A network administrator is tasked to block all outbound SSH connections on the default port from a network subnet of 10.152.8.0/21 on a Linux based firewall. Which of the following rule sets would accomplish this task?
A) iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 22 -j REJECT
B) iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 23 -j REJECT
C) iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 22 -j ACCEPT
D) iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 23 -j ACCEPT

Question

Quizplus · Accepted Answer

The correct rule set uses the default SSH port (22) and the REJECT target to block outbound connections.

A Network Administrator Is Tasked to Block All Outbound SSH