User`s manual

B
B. Well Known Port Numbers
This appendix is for your reference about the Well Known port numbers that may cause network problem if you
set the NPort into the same port. Refer to RFC 1700 for Well Known port numbers of refer to the following
introduction from the IANA.
The port numbers are divided into three ranges: the Well Known Ports, the Registered Ports, and the Dynamic
and/or Private Ports.
The Well Known Ports are those from 0 through 1023.
The Registered Ports are those from 1024 through 49151.
The Dynamic and/or Private Ports are those from 49152 through 65535.
The Well Known Ports are assigned by the IANA, and on most systems, can only be used by system processes
or by programs executed by privileged users. The following table shows famous port numbers among the
well-known port numbers. For more details, please visit the IANA website:
http://www.iana.org/assignments/port-numbers
UDP Socket Application Service
0 reserved
2 Management Utility
7 Echo
9 Discard
11 Active Users (systat)
13 Daytime
35
Any private printer server
39 Resource Location Protocol
42 Host name server (names server)
43 Whois (nickname)
49 (Login Host Protocol) (Login)
53 Domain Name Server (domain)
69 Trivial Transfer Protocol (TETP)
70 Gopler Protocol
79 Finger Protocol
80 World Wide Web HTTP
107
Remote Telnet Service
111 Sun Remote Procedure Call (Sunrpc)
119 Network News Transfer Protocol (NNTP)
123 Network Time Protocol (nnp)
161 SNMP (Simple Network Mail Protocol)
162 SNMP Traps
213 IPX (Used for IP Tunneling)