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well-known ports
gen.	公认端口
exhib.	通用端口
IT	知名端口
well-known port
multimed.	公认端口
English thesaurus
well-known ports
IT	Well-known ports - 0 through 1023: Controlled and assigned by the Internet Assigned Numbers Authority IANA, and on most systems can be used only by system or root processes or by programs executed by privileged users. The assigned ports use the first portion of the possible port numbers. Initially, these assigned ports were in the range 0-255. Currently, the range for assigned ports managed by the IANA has been expanded to the range 0-1023.