| dc:description | A circuit-level gateway does not permit an end-to-end TCP connection, but sets up two TCP connections, one between itself and a TCP user on an inner host and one between itself and a TCP user on an outside host. The gateway typically relays TCP segments from one connection to the other without examining the contents. The security function consists of determining which connections will be allowed. (Stallings06) |
| dc:description | ensures the validity of TCP and UDP sessions by ceating a handshake between communicating parties and passing packets through until the end of the session. (ISD) |
Class(CircuitLevelGateway partial Firewall)