|
|
| Port Numbers |
 [ Introduction ] |
The port numbers are divided into three ranges:
The Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports.
Unassigned Ports should not be used. The IANA will assign the number for the port after your application has been approved.
Assignment of a port number does not in any way imply an endorsement of an application or product, and the fact that network traffic is flowing to or from a registered port does not mean that it is "good" traffic. Firewall and system administrators should choose how to configure their systems based on their knowledge of the traffic in question, not whether there is a port number registered or not.
|
| [ Well Known Ports ] |
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 Well Known Ports are in the range 0-1023.
|
| [ Registered Ports ] |
The Registered Ports are listed by the IANA and on most systems can be
used by ordinary user processes or programs executed by ordinary
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 IANA registers uses of these ports as a convenience to the
community.
To the extent possible, these same port assignments are used with the
UDP [RFC768].
The Registered Ports are in the range 1024-49151.
|
| [ Dynamic and/or Private Ports ] |
The Dynamic and/or Private Ports are in the rage 49152-65535
|
| [ TCP and UDP Port List ] |
Below are a list of ports and the programs that use them:
 - TCP Ports list (3498 ports in list)
- -
UDP Ports list (3178 ports in list)
|
|
|
|
