A layer 4 firewall a device that can look at all protocol headers up to the transport layer CANNOT 2011 computer science gate

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A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT - 2011-computer science-gate

A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT
(A) block entire HTTP traffic during 9:00PM and 5 :0OAM
(B) block all ICMP traffic
(C) stop incoming traffic from a specific IP address but allow outgoing traffic to the same IP address
(D) block TCP traffic from a specific user on a multi-user system during 9:00PM and 5:00AM


By:Amogh

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Answers

(A) block HTTP traffic during 9:00PM and 5:00AM
HTTP is an application layer protocol. Since firewal is at layer 4, it cannot block HTTP data.

milan-ransingh

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