单项选择题

A. Ensure that a stateful firewall allows only HTTP tra……

Since HTTP is one of the most common protocols used in the internet， what should be done at a firewall level to ensure thatthe protocol is being used correctly？（）

A. Ensure that a stateful firewall allows only HTTP traffic destined for valid web server IP addresses.
B. Ensure that a firewall has SYN flood and DDoS protection applied specifically for valid web servers.
C. Ensure that your firewall enforces HTTP protocol compliance to ensure that only valid flows are allowed inand outof your network.
D. Ensure that HTTP is always authenticated.
E. Ensure that your web server is in a different zone than your backend servers such as SQL and DNS.

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