Port numbers

Port numbers are used to distinguish between different services that run over transport protocols such as TCP, UDP,etc...Port numbers are assigned in various ways, based on three ranges: System

Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private

Ports (49152-65535). This application holds port numbers which are registered to IANA. The port numbers in the range from 0 to 1023 are the well-known ports or system ports.</div> <div jsname="WJz9Hc" style="display:none">系统：端口号用于运行在传输协议如TCP，UDP等不同服务之间的区别..端口号以各种方式，基于三个范围分配

端口（0-1023），用户端口（1024-49151），以及动态和/或私有

端口（49152-65535）。此应用程序保存其注册到IANA的端口号。从0到1023范围内的端口号是众所周知的端口或系统端口。</div> <div class="show-more-end">