A security technician has been tasked with opening ports on a firewall to allow users to browse the
internet. Which of the following ports should be opened on the firewall? (Select Three)
A.
22
B.
53
C.
80
D.
110
E.
443
F.
445
G.
8080
Explanation:
B,C,E – In addition to HTTP, web browsing works best when you can actually resolve the domain name using DNS – which runs on port 53. 🙂
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Agree, port 80, 443, and DNS 53.
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C E G. The ask is not about DNS. The question doesn’t state that the users are only to use domain name to connect; they can use IPs. Ports 80 for http, 443 for https and 8080 that is usually used for proxy seems correct answer to me.
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I must put this, because we have here someone who don’t read book very well.
DNS , port 53 UDP and TCP need to be open on SERVER. Not on client, or other words – your PC.
I will go with 80 http, 443 https and 8080 if we going on WEB from proxy server.
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So block port 53 on your computer and try to browse the Internet
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