(Answered) A device that can look at all protocol headers up to the

Engineering

A device that can look at all protocol headers up to the transport layer is called layer-4 firewall. Which one of the following statement is true layer-4 firewall?

(A) It cannot block all ICMP traffic

(B) It cannot block entire HTTP traffic during 9:00pm and 5:00am

(D) It cannot stop incoming traffic from a specific IP address but allow outgoing traffic to the same address

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Computer Engineering, Engineering

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