![]() Securecast1, outgoing packets to NAI's SecureCast serversAs of 2000ĪURP (AppleTalk Update-based Routing Protocol) Mapping of Airline Traffic over Internet Protocol (MATIP) type AĬloanto-net-1 (used by Cloanto Amiga Explorer and VMs) Precision Time Protocol (PTP) general messages Precision Time Protocol (PTP) event messages MacOS Server Admin (officially AppleShare IP Web administration) ![]() Internet Message Access Protocol (IMAP), version 3 X Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager serverīorder Gateway Protocol (BGP), used to exchange routing and reachability information among autonomous systems (AS) on the Internet Simple Network Management Protocol Trap (SNMPTRAP) ![]() Simple Network Management Protocol (SNMP) Structured Query Language (SQL) Serviceĭistributed Mail System Protocol (DMSP, sometimes referred to as Pcmail) Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information Internet Message Access Protocol (IMAP), management of electronic mail messages on a serverīackground File Transfer Program (BFTP) NetBIOS Name Service, used for name registration and resolution Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service, used to remotely manage services including DHCP server, DNS server and WINS. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development Network Time Protocol (NTP), used for time synchronizationįormerly Unisys Unitary Login, renamed by Unisys to NXEdit. Network News Transfer Protocol (NNTP), retrieval of newsgroup messages Used to determine a user's identity of a particular TCP connection. Ident, authentication service/identification protocol, used by IRC servers to identify usersĪuthentication Service (auth), the predecessor to identification protocol. Open Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC) IBM Systems Network Architecture (SNA) gateway access server ISO Transport Service Access Point (TSAP) Class 0 protocol ĭigital Imaging and Communications in Medicine (DICOM also port 11112) SUPDUP, terminal-independent remote login Hypertext Transfer Protocol (HTTP) uses TCP in versions 1.x and 2. HTTP/3 uses QUIC, a transport protocol on top of UDP. īootstrap Protocol (BOOTP) server also used by Dynamic Host Configuration Protocol (DHCP)īootstrap Protocol (BOOTP) client also used by Dynamic Host Configuration Protocol (DHCP) Historically assigned to the NIFTP-Based Mail protocol, but was never documented in the related IEN. The port number entry was removed from IANA's registry on. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. Xerox Network Systems (XNS) Authentication Protocol. Xerox Network Systems (XNS) Clearinghouse (Name Server). Xerox Network Systems (XNS) Time Protocol. Historically used for Interface Message Processor logical address management,[ entry has been removed by IANA on TACACS Login Host protocol. TACACS+, still in draft which is an improved but distinct version of TACACS, only uses TCP 49. Palo Alto Networks' Panorama High Availability (HA) sync encrypted port. Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers Telnet protocol-unencrypted text communications Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding Remote Job Entry was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/5 and IANA has assigned both TCP and UDP 5 to it.įile Transfer Protocol (FTP) data transferįile Transfer Protocol (FTP) control (command) ![]() Both TCP and UDP have been assigned to TCPMUX by IANA, but by design only TCP is specified. In programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port
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