Plus the order in which they teach also would mean that circuit level gateway is better than application level gateway. but I've seen people saying circuit level gateway is more powerful than application level gateway. Whereas circuit level gateway only look up to network layer.
The example was cool but it didn't make any sense later on to me.Īpplication level gateway can look up to all layers of OSI model
Two different TCP connection are formed, inbound and outbound. Packet(from the internal network point of view). The circuit level gateway CHANGES the source ip address of outgoing
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