EntityQ2293568· pop 9· linked from 18 articlesApplication-level gatewaySign in to savesecurity component that augments a firewall or NAT employed in a computer networkConnectionsnetwork address translationEntityMicrosoft WindowsEntityIP addressEntityVoice over IPEntityFile Transfer ProtocolEntityQ73EntityfirewallEntityinstant messagingEntityBitTorrentEntityproxy serverEntityWindows Server 2003Entitycellular networkEntityapplication layerEntitySession Initiation ProtocolEntitynetwork layerEntitygatewayEntityIPsecEntityTrivial File Transfer ProtocolEntityReal Time Streaming ProtocolEntityWindows FirewallEntityCategoriesComputer network securityInternet Protocol based network softwareWindows services