Functions Domain Name Service DNSDNS Protocol OverviewName ServersResource Records RRsTheory of OperationFile SharingNFS Protocol OverviewFile TransferFTP Protocol OverviewMailMail FormatMIME Protocol OverviewPGP Protocol OverviewTransportIMAP Protocol OverviewPOP Protocol OverviewSMTP Protocol OverviewNetwork ManagementManagement Information Base MIBSNMP Protocol OverviewNewsNews Message FormatNNTP Protocol OverviewPublicationAnonymous FTPGopherStreaming MediaWorld Wide WebHTML Language OverviewHTTP Protocol OverviewUniform Resource LocatorsRemote LoginTELNET Protocol OverviewRoutingBGP-4 Protocol OverviewDistance-Vector Routing ProtocolsExterior RoutingInterior RoutingLink State Routing ProtocolsOSPF-2 Protocol OverviewRIP Protocol OverviewRouting TablesSecurityIPsec Protocol OverviewKerberos Protocol OverviewSSH Protocol OverviewSSL/TLS Protocol OverviewTrusted PortsSession ManagementRPC Protocol OverviewTCP Protocol OverviewTransportICMP Protocol OverviewIGMP Protocol OverviewIP Protocol OverviewUDP Protocol OverviewWindowing SystemsX Windows Protocol Overview