Senatek HELLODEVICE LITE SERIES LS100 - Manual (Page 43)

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Appendix B: Well-known Port Numbers
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. Table B-1 shows famous port numbers
among the well-known port numbers. For more details, please visit IANA website:
http://www.iana.org/assignments/port-numbers
Table B-1 Well-known port numbers
Port number Protocol TCP/UDP
21 FTP (File Transfer Protocol) TCP
22 SSH (Secure SHell) TCP
23 Telnet TCP
25 SMTP (Simple Mail Transfer Protocol) TCP
37 Time TCP, UDP
39 RLP (Resource Location Protocol) UDP
49 TACACS, TACACS+ UDP
53 DNS UDP
67 BOOTP server UDP
68 BOOTP client UDP
69 TFTP UDP
70 Gopher TCP
79 Finger TCP
80 HTTP TCP
110 POP3 TCP
119 NNTP (Network News Transfer Protocol) TCP
161/162 SNMP UDP