A layer-4 firewall ( a device that can look at all protocol headers up to the transport layer) CANNOT A. block HTTP traffic during 9:00PM and 5:00AM B. block all ICMP traffic C. stop incoming traffic from a specific IP address but allow outgoing traffic to same IP D. block TCP traffic from a specific user on a specific IP address on multi-user system during 9:00PM and 5:00AM Answer Workspace Report Discuss Answer with explanation Answer: Option A Explanation HTTP is an application layer protocol. Since the firewall is at layer 4, it cannot block HTTP data. Workspace
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