Question: Gerard has been advised to check his Linux web servers for open ports that attackers might be able to use to penetrate the servers' security.

Gerard has been advised to check his Linux web servers for open ports that attackers might be able to use to penetrate the servers' security. Which of the following utilities can he use to do this?

A tcpdump

B dig

C nmap

iperf

Gerard has been advised to check his Linux web

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