A variation of the application layer firewall is called a:

The correct answer is D. Circuit Level Firewall. A circuit-level firewall (also called a circuit-level gateway) is a variation of the application layer firewall/proxy. Rather than inspecting the content of each application-layer packet, it monitors the TCP handshake and session establishment to ensure the connection is…

Submitted by tunde_lagos· Apr 18, 2026Network and Communications Security

Question

Options

ACurrent Level Firewall.
BCache Level Firewall.
CSession Level Firewall.
DCircuit Level Firewall.

How the community answered

(36 responses)

A
3% (1)
C
3% (1)
D
94% (34)

Explanation

A circuit-level firewall (also called a circuit-level gateway) is a variation of the application layer firewall/proxy. Rather than inspecting the content of each application-layer packet, it monitors the TCP handshake and session establishment to ensure the connection is legitimate, then relays data without further inspection. It operates at the session layer (Layer 5) of the OSI model. 'Current Level,' 'Cache Level,' and 'Session Level Firewall' are not standard firewall classifications.

Topics

#Firewall types#Circuit-level firewall#Application-level firewall#Network security

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