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Which of the following rules on the firewall should the…

A technician is configuring a computer lab at a school. The computers need to be able to communicate with each other, but students using the computers should
not be able to access the internet. Which of the following rules on the firewall should the technician configure for the lab computers?

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A.
Block all LAN to LAN traffic

B.
Block all LAN to WAN traffic

C.
Block all WAN to LAN traffic

D.
Block all WLAN to WAN traffic

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5 Comments on “Which of the following rules on the firewall should the…

  1. Kane says:

    Thought the same thing, but when you think of it this way, blocking WAN to LAN would mean denying requests saying “hey internet, give me things”, would be synonymous with blocking all WAN to LAN traffic. Maybe this is the train of thought required here? iDunno.




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  2. Hitmar says:

    Remember the internet (HTTP, HTTPS) and are TCP protocols, the 3 way hand shake…

    Hey are you there?
    Yes, I am here and I see you.
    Send me this web page.

    Since the WAN traffic is blocked, the computers in the lab are not getting the “Yes, I am here…” response from whatever destination they are trying to reach it will pop a “The requested website could not be reached” message on the computer in the lab.




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  3. klt316 says:

    Why would you allow unnecessary traffic out and back across your internet link when it’s going to be blocked on the way back? Answer is you wouldn’t! You may be paying for unnecessary bandwidth or at least you would be adding unnecessary traffic to your link which could slow it down for valid internal use. A basic rule in networking, you want to block traffic closest to the source, so the correct answer should be B:Block LAN to WAN traffic.




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