List of TCP and UDP port numbers

List of TCP and UDP port numbers
From Wikipedia, the free encyclopedia
This is a list of Internet socket port numbers used by protocols of the Transport Layer of the Internet Protocol Suite for the establishment of host-to-host communications.
Originally, these port numbers were used by the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), but are used also for the Stream Control Transmission Protocol (SCTP), and the Datagram Congestion Control Protocol (DCCP). SCTP and DCCP services usually use a port number that matches the service of the corresponding TCP or UDP implementation if they exist.
The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[1]However, many unofficial uses of both well-known and registered port numbers occur in practice.
Contents
 [hide]
1 Table legend
2 Well-known ports: 0–1023
3 Registered ports: 1024–49151
4 Dynamic, private or ephemeral ports: 49152–65535
5 See also
6 References
7 External links
[edit]
Table legend

Color coding of table entries
Official
Port/application combination is registered with IANA
Unofficial
Port/application combination is not registered with IANA
Conflict
Port is in use for multiple applications
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Well-known ports: 0–1023

The port numbers in the range from 0 to 1023 are the well-known ports. They are used by system processes that provide widely-used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to anIP address using one of the well-known ports.
Port
TCP
UDP
Description
Status
0
UDP
Reserved
Official
1
TCP
UDP
TCP Port Service Multiplexer (TCPMUX)
Official
2
TCP
UDP
Management Utility
Official
3
TCP
UDP
Compression Process
Official
4
TCP
UDP
Unassigned
Official
5
TCP
UDP
Remote Job Entry
Official
6
TCP
UDP
Unassigned
Official
7
TCP
UDP
Echo Protocol
Official
8
TCP
UDP
Unassigned
Official
9
TCP
UDP
Discard Protocol
Official
10
TCP
UDP
Unassigned
Official
11
TCP
UDP
Active Users
Official
12
TCP
UDP
Unassigned
Official
13
TCP
UDP
Daytime Protocol (RFC 867)
Official
14
TCP
UDP
Unassigned
Official
16
TCP
UDP
Unassigned
Official
17
TCP
UDP
Quote of the Day
Official
18
TCP
UDP
Message Send Protocol
Official
19
TCP
UDP
Character Generator Protocol (CHARGEN)
Official
20
TCP
FTP – data transfer
Official
21
TCP
FTP – control (command)
Official
22
TCP
UDP
Secure Shell (SSH)—used for secure logins, file transfers (scp, sftp) and port forwarding
Official
23
TCP
Telnet protocol—unencrypted text communications
Official
24
TCP
UDP
Priv-mail : any private mail system.
Official
25
TCP
Simple Mail Transfer Protocol (SMTP)—used for e-mail routing between mail servers
Official
34
TCP
UDP
Remote File (RF)—used to transfer files between machines
Unofficial
35
TCP
UDP
Any private printer server protocol
Official
37
TCP
UDP
TIME protocol
Official
39
TCP
UDP
Resource Location Protocol[2] (RLP)—used for determining the location of higher level
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