Appendix B: Well-Known Port Numbers - Sena PS100 User Manual

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
Port number
21
22
23
25
37
39
49
53
67
68
69
70
79
80
110
119
161/162
Table B-1 Well-known port numbers
Protocol
FTP (File Transfer Protocol)
SSH (Secure SHell)
Telnet
SMTP (Simple Mail Transfer Protocol)
Time
RLP (Resource Location Protocol)
TACACS, TACACS+
DNS
BOOTP server
BOOTP client
TFTP
Gopher
Finger
HTTP
POP3
NNTP (Network News Transfer Protocol)
SNMP
65
TCP/UDP
TCP
TCP
TCP
TCP
TCP, UDP
UDP
UDP
UDP
UDP
UDP
UDP
TCP
TCP
TCP
TCP
TCP
UDP