Well-Known Tcp/Udp Port Numbers - D-Link DKVM-IP1 User Manual

8.5

Well-known TCP/UDP Port Numbers

Port numbers are divided into three ranges: Well-Known Ports, Registered Ports, and Dynamic
and/or Private Ports. Well-Known Ports are those that are numbered from 0 to 1023. Registered
Ports are those from 1024 through 49151. Dynamic and/or Private Ports are those from 49152
through 65535.
Well-Known Ports are assigned by IANA, and on most systems, can only be used by system
processes or by programs executed by privileged users. The table below shows some of the
well-known port numbers. For more details, please visit the IANA website:
http://www.iana.org/assignments/port-numbers
Port
Number
21 FTP (File Transfer Protocol)
22 SSH (Secure Shell)
23 Telnet
25 SMTP (Simple Mail Transfer Protocol)
37 Time
39 RLP (Resource Location Protocol)
49 TACACS, TACACS+
53 DNS
67 BOOTP server
68 BOOTP client
69 TFTP
70 Gopher
79 Finger
80 HTTP
110 POP3
119 NNTP (Network News Transfer
Protocol)
161/162 SNMP
443 HTTPS
Protocol
129
TCP/UDP
TCP
TCP
TCP
TCP
TCP, UCP
UDP
UDP
UDP
UDP
UDP
UDP
TCP
TCP
TCP
TCP
TCP
UDP
TCP