A Network Administrator Is Tasked to Block All Outbound SSH

question 345

Multiple Choice

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

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Definitions:

Social Loafing

The occurrence in which people put in less effort towards reaching a goal when they are part of a group compared to when they are working solo.

Common Goal

A shared objective or aim among members of a group.

Groupthink

A phenomenon whereby a group makes faulty decisions because of group pressures, leading to a degradation of mental efficiency, reality testing, and moral judgment.

Social Facilitation

The tendency for people to perform differently when in the presence of others than when alone, often improving on simple or well-rehearsed tasks.