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Well Known Port Numbers
The following description of port number assignments for Internet Protocol (IP) communication is taken from the Internet
Assigned Numbers Authority (IANA) web site (www.iana.org).
"The Well Known Ports are assigned by the IANA and on most systems can
only be used by system (or root) processes or by programs executed by
privileged users. Ports are used in the TCP [RFC793] to name the ends of
logical connections which carry long term conversations. For the purpose of
providing services to unknown callers, a service contact port is defined. This list
specifies the port used by the server process as its contact port. The contact port
is sometimes called the "well-known port". To the extent possible, these same
port assignments are used with the UDP [RFC768]. The range for assigned ports
managed by the IANA is 0-1023."
Well-known port numbers especially pertinent to TalkAnytime operation are listed below.
Port Number Assignment List
Well-Known Port Numbers
Function
telnet
tftp
snmp
snmp tray
gatekeeper registration
H.323
SIP
SysLog
Port Number
23
69
161
162
1719
1720
5060
514
218
TalkAnytime User Guide
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