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Question 362 - XK0-005 discussion

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An administrator changed the default port of an SSH server to 2222 on myhost, and clients are not able to connect. The administrator runs some commands and receives the following output:

vbnet

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$ ssh -p 2222 myhost

ssh:connect to host myhost on port 2222: No route to host

Which of the following commands should be run on myhost?

A.

firewall-cmd --zone=public --add-service=ssh

Answers
A.

firewall-cmd --zone=public --add-service=ssh

B.

firewall-cmd --zone=public --add-port=2222

Answers
B.

firewall-cmd --zone=public --add-port=2222

C.

iptables --zone=public --add-service=ssh

Answers
C.

iptables --zone=public --add-service=ssh

D.

iptables --zone=public --add-port=2222

Answers
D.

iptables --zone=public --add-port=2222

Suggested answer: B

Explanation:

The administrator has likely updated the SSH server to listen on a non-standard port (2222), but the firewall rules were not updated to allow connections on this new port. The firewall-cmd command with the --add-port option allows traffic on a specific port through the firewall. The command should be executed on myhost to permit incoming SSH connections on port 2222.

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asked 18/10/2024
Lietuvis Kau
32 questions
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