A typical use of circuit-level gateways is a situation in which the system administrator trusts the internal users.

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Circuit-level gateways work by verifying the TCP handshake, which is designed to ensure that the session is initiated before packets are exchanged between a trusted internal user and an external host. This implies a level of trust in the internal users, as the gateway does not inspect the packet contents themselves, making it suitable for environments where internal users are considered secure.

A Typical Use of Circuit-Level Gateways Is a Situation in Which