Short-lived transport protocol port for IP communications
An ephemeral port is a communications endpoint (port) of a transport layer protocol of the Internet protocol suite that is used for only a short period of time for the duration of a communication session. Such short-lived ports are allocated automatically within a predefined range of port numbers by the IP stack software of a computer operating system. The Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Stream Control Transmission Protocol (SCTP) typically use an ephemeral port for the client-end of a client–server communication. At the server end of the communication session, ephemeral ports may also be used for continuation of communications with a client that initially connected to one of the services listening with a well-known port. For example, the Trivial File Transfer Protocol (TFTP)[1] and Remote Procedure Call (RPC) applications can behave in this manner.
The allocation of an ephemeral port is temporary and only valid for the duration of the communication session. After completion of the session, the port is destroyed and the port number becomes available for reuse, but many implementations simply increment the last used port number until the ephemeral port range is exhausted, when the numbers roll over. Ephemeral ports are also called dynamic ports, because they are used on a per request basis, and are only known by number once allocated.
An ephemeralport is a communications endpoint (port) of a transport layer protocol of the Internet protocol suite that is used for only a short period...
services, for temporary purposes, and for automatic allocation of ephemeralports. TCP port 465 was originally assigned to allow the use of SMTP over SSL...
client, the port number is likely to be an ephemeralport. If the source host is the server, the port number is likely to be a well-known port number from...
is sent from a randomly allocated ephemeralport, and all future packets to host S should be directed to this port. The source host sends numbered DATA...
with numbers 49152-65535 are called dynamic, private or ephemeralports. Both system and user ports are used by transport protocols (TCP, UDP, DCCP, SCTP)...
arrive, but the client must allocate an ephemeralport before sending the first SYN to the server. This port remains allocated during the whole conversation...
because, under TCP, one port can only be used for one communication at a time, so programs bind distinct TCP sockets to ephemeralports for each TCP communication...
Port of Tanjung Priok is the busiest and most advanced Indonesian seaport, handling more than 50% of Indonesia's trans-shipment cargo traffic. The port...
server port 80 and Telnet uses server port 23. Clients connecting to a service usually use ephemeralports, i.e., port numbers assigned only for the duration...
fixes the bugs in FTP that made it inconvenient to use for many small ephemeral transfers as are typical in web pages. FTP has a stateful control connection...
service handler. The ports from 8 to 47 are used for subsystem specific services. All remaining ports, from 48 to 63, are ephemeralports used for outgoing...
it was the main port of the Sunda Kingdom. The port is situated in Penjaringan District, of North Jakarta, Indonesia. Today the old port only accommodates...
and the hyperlinks affected by it are often called "dead" links. The ephemeral nature of the Web has prompted many efforts to archive websites. The Internet...
glacier, such streams can even flow uphill. An intermittent river (or ephemeral river) only flows occasionally and can be dry for several years at a time...
Ephemeral architecture had a special relevance in the Spanish Baroque, as it fulfilled diverse aesthetic, political, religious and social functions. On...
reach front-end pods). Filesystems in the Kubernetes container provide ephemeral storage, by default. This means that a restart of the pod will wipe out...
Spanish Haiti, on November 30, 1821. This period is also known as the Ephemeral independence. The newly independent republic ended a mere two months later...
descriptions of redirect targets Glossary of landforms Lists of bodies of water Port – Maritime facility where ships may dock to load and discharge passengers...
Richwood Bottoms Ridgeway Pine Relict Riley Lake Riveredge Creek and Ephemeral Pond Robinson Creek Pines Roche-A-Cri Mound Roche-A-Cri Woods Rock Creek...
valley in Libya which leads down from the Jebel Akhdar mountains to the port city of Derna. Like many other wadis in North Africa, it is an intermittent...
Darwin's illness remained unknown, and attempts at treatment had only ephemeral success. On 23 June, he took a break and went "geologising" in Scotland...
the Tanjung Priuk railway station. List of East Asian ports Cobban, James L. 1985. "The ephemeral historic district in Jakarta". Geographical Review 75(3):300-318...
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