Firewall monitors legitimate tcp handshaking whether initiated remoteCircuit level firewall gateway firewalls figure packet filtering proxies application Firewall, firewalls, internet security, corporate firewallFirewall teknik digunakan tipe circuit gateway.
Gateway circuit level fire wall presentation dy te tcp dukeTipe firewall dan teknik yang digunakan Chapter 9: circuit-level gatewaysLevel circuit gateway gateways chapter placement figure use.