Well-Known TCP Port Numbers - Webopedia.com
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Updated March 12, 2014 / Posted June 24, 2010
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By - Webopedia Staff
port
This list of well-known port numbers
specifies the port used by the server
process as its contact port.
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 pre-assigned
to them by the IANA, and these are called the
"well-known ports" which are specified in RFC 1700.
port forwarding
Port to Application
Mapping
NAPT
SSH port forwarding
PAT - port address
translation
COM
port scan
port triggering
uplink port
List of Well-Known Ports
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 Port Service Multiplexer (TCPMUX)
5
Remote Job Entry (RJE)
7
ECHO
18
Message Send Protocol (MSP)
20
FTP -- Data
21
FTP -- Control
22
SSH Remote Login Protocol
23
Telnet
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25
Simple Mail Transfer Protocol (SMTP)
29
MSG ICP
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42
Host Name Server (Nameserv)
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43
WhoIs
49
Login Host Protocol (Login)
53
Domain Name System (DNS)
69
Trivial File Transfer Protocol (TFTP)
70
Gopher Services
79
Finger
80
HTTP
103
X.400 Standard
108
SNA Gateway Access Server
109
POP2
110
POP3
115
Simple File Transfer Protocol (SFTP)
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Newsgroup (NNTP)
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NetBIOS Name Service
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Well-Known TCP Port Numbers - Webopedia.com
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http://www.webopedia.com/quick_ref/portnumbers.asp
143
Interim Mail Access Protocol (IMAP)
150
NetBIOS Session Service
156
SQL Server
161
SNMP
179
Border Gateway Protocol (BGP)
190
Gateway Access Control Protocol (GACP)
194
Internet Relay Chat (IRC)
197
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Directory Location Service
(DLS)
389
Lightweight Directory Access Protocol (LDAP)
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443
HTTPS
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.
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Port Assignments for Well-Known Ports
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