Explanation:
The correct answer is C because the command gcloud compute firewall-rules create is utilized to establish firewall rules that permit or block incoming/outgoing traffic. Specifically, the --allow tcp:22 parameter ensures that SSH traffic (which uses TCP port 22) is allowed through the firewall. This is crucial for SSH connections to succeed.
For more detailed information, refer to the GCP documentation on Cloud SDK Firewall Rules.
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Your developers are attempting to establish an SSH connection to an Ubuntu server for troubleshooting purposes, but the connection is timing out. Which command would most effectively resolve this issue?
A
gcloud compute firewall-rules create open-ssh --network $NETWORK --allow tcp:3389
B
gcloud compute firewall-rules create open-ssh --network $NETWORK --deny tcp:22
C
gcloud compute firewall-rules create open-ssh --network $NETWORK --allow tcp:22
D
gcloud compute firewall-rules create open-ssh