By examining the source and destination addresses, the application usage, the source of origin, and the relationship between current packets with the previous packets of the same session, firewalls are able to grant a broader range of access for authorized users and activities and actively watch for and block unauthorized users and activities.\

Full Question:

By examining the source and destination addresses, the application usage, the source of origin, and the relationship between current packets with the previous packets of the same session, firewalls are able to grant a broader range of access for authorized users and activities and actively watch for and block unauthorized users and activities.

A. Static packet-filtering

B. Application-level gateway

C. Stateful inspection

D. Circuit-level gateway

The answer is C) Stateful Inspection firewalls are able to grant a broader range of access for authorized users and activities and actively watch for and block unauthorized users and activities.        

Explanation:

Stateful firewalls monitor all aspects of the traffic streams, their characteristics and communication channels. These firewalls can integrate encryption or tunnels, identify TCP connection stages, packet state and other key status updates.

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