In TCP/IP and UDP networks, a port is
an endpoint to a logical
connection and the way a client program specifies a specific server program on
a computer in a network. Some ports have numbers that are preassigned
to them by the IANA,
and these are known as well-known ports (specified in RFC 1700). Port numbers
range from 0 to 65536, but only ports numbers 0 to 1024 are reserved for
privileged services and designated as well-known ports. This list of well-known
port numbers specifies the port used by the server process as its contact port.
|
Port Number |
Description |
|
1 |
TCP |
|
5 |
Remote Job Entry (RJE) |
|
7 |
ECHO |
|
18 |
Message Send Protocol (MSP) |
|
20 |
FTP -- Data |
|
21 |
FTP -- Control |
|
22 |
SSH Remote Login
Protocol |
|
23 |
|
|
25 |
|
|
29 |
MSG ICP |
|
37 |
Time |
|
42 |
Host Name Server (Nameserv) |
|
43 |
WhoIs |
|
49 |
Login Host Protocol (Login) |
|
53 |
Domain Name System
(DNS) |
|
69 |
|
|
70 |
Gopher Services |
|
79 |
|
|
80 |
|
|
103 |
X.400 Standard |
|
108 |
SNA Gateway Access Server |
|
109 |
POP2 |
|
110 |
|
|
115 |
Simple File Transfer
Protocol (SFTP) |
|
118 |
SQL Services |
|
119 |
Newsgroup (NNTP) |
|
137 |
NetBIOS Name
Service |
|
139 |
NetBIOS Datagram Service |
|
143 |
Interim Mail Access
Protocol (IMAP) |
|
150 |
NetBIOS Session Service |
|
156 |
|
|
161 |
|
|
179 |
Border Gateway Protocol
(BGP) |
|
190 |
Gateway Access Control
Protocol (GACP) |
|
194 |
Internet Relay Chat
(IRC) |
|
197 |
Directory Location Service
(DLS) |
|
389 |
|
|
396 |
Novell Netware over IP |
|
443 |
|
|
444 |
Simple Network Paging
Protocol (SNPP) |
|
445 |
Microsoft-DS |
|
458 |
Apple QuickTime |
|
546 |
DHCP Client |
|
547 |
DHCP Server |
|
563 |
SNEWS |
|
569 |
MSN |
|
1080 |
Socks |
For further information, see RFC 1700.