A network technician has set up a firewall and entered only three rules allowing traffic on ports 21, 110, and 25 to secure the network. Users are reporting they cannot access web pages using the URLs. Which of the following can the technician do to correct the situation?

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A network technician has set up a firewall and entered only three rules allowing traffic on ports 21, 110, and 25 to secure the network. Users are reporting they cannot access web pages using the URLs. Which of the following can the technician do to correct the situation?