During network reconnaissance of an Azure VM, you inspect its Network Security Group.

Detailed Solution:

List NSG rules:

az network nsg rule list \

--resource-group rg-prod-apps-eastus \

--nsg-name nsg-prod-linux01 \

--output table

Expected risky rule:

Name Priority Direction Access Protocol Source DestinationPortRange

------------ -------- --------- ------ -------- ------------ --------------------

Allow-SSH 100 Inbound Allow Tcp Internet 22

SSH exposed directly to the Internet is risky because it increases brute-force, credential-stuffing, and remote exploitation exposure. In a hardened Azure environment, SSH should typically be restricted through VPN, Bastion, JIT access, or trusted administrative IP ranges.

Correct answer:

B. Allow TCP 22 from Internet

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