Which Of The Following Network Services Uses Tcp/ip Port 22?

Service Name and Send Protocol Port Number Registry

Last Updated

2022-04-14

Expert(s)

TCP/UDP: Joe Touch; Eliot Lear, Markku Kojo, Kumiko Ono, Martin Stiemerling,  Wes Eddy, Brian Trammell, Jana Iyengar, and Michael Scharf SCTP: Michael Tuexen DCCP: Eddie Kohler and Yoshifumi Nishida

Reference

[RFC6335]

Note

Service names and port numbers are used to distinguish between different services that run over transport protocols such as TCP, UDP, DCCP, and SCTP. Service names are assigned on a first-come, first-served process, as documented in [RFC6335]. Port numbers are assigned in various ways, based on 3 ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535); the unlike uses of these ranges are described in [RFC6335]. According to Section 8.one.two of [RFC6335], System Ports are assigned by the "IETF Review" or "IESG Approval" procedures described in [RFC8126]. User Ports are assigned by IANA using the "IETF Review" process, the "IESG Approval" process, or the "Skillful Review" procedure, every bit per [RFC6335]. Dynamic Ports are not assigned. The registration procedures for service names and port numbers are described in [RFC6335]. Assigned ports both System and User ports SHOULD Non be used without or prior to IANA registration. ************************************************************************ * Please Note THE Following: * * * * Assignment OF A PORT NUMBER DOES NOT IN Any Fashion 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 * * Information technology IS "Practiced" TRAFFIC, NOR THAT Information technology NECESSARILY CORRESPONDS TO THE * * ASSIGNED SERVICE. FIREWALL AND Organisation 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. * ************************************************************************

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Service Proper name	Port Number	Transport Protocol	Description	Assignee	Contact	Modification Appointment	Reference	Service Code	Assignment Notes
	0	tcp	Reserved	[Jon_Postel]	[Jon_Postel]
	0	udp	Reserved	[Jon_Postel]	[Jon_Postel]
tcpmux	1	tcp	TCP Port Service Multiplexer	[Mark_Lottor]	[Mark_Lottor]
tcpmux	one	udp	TCP Port Service Multiplexer	[Mark_Lottor]	[Mark_Lottor]
compressnet	2	tcp	Management Utility
compressnet	ii	udp	Management Utility
compressnet	3	tcp	Pinch Procedure	[Bernie_Volz]	[Bernie_Volz]
compressnet	3	udp	Pinch Procedure	[Bernie_Volz]	[Bernie_Volz]
	4	tcp	Unassigned
	4	udp	Unassigned
rje	5	tcp	Remote Job Entry	[Jon_Postel]	[Jon_Postel]
rje	5	udp	Remote Task Entry	[Jon_Postel]	[Jon_Postel]
	6	tcp	Unassigned
	half-dozen	udp	Unassigned
echo	7	tcp	Echo	[Jon_Postel]	[Jon_Postel]
repeat	7	udp	Echo	[Jon_Postel]	[Jon_Postel]
	8	tcp	Unassigned
	viii	udp	Unassigned
discard	nine	tcp	Discard	[Jon_Postel]	[Jon_Postel]
discard	ix	udp	Discard	[Jon_Postel]	[Jon_Postel]
discard	ix	sctp	Discard	[Randall_Stewart]	[Randall_Stewart]	2022-02-07	[RFC-ietf-tsvwg-rfc4960-bis-xix]
discard	9	dccp	Discard	[Eddie_Kohler]	[Eddie_Kohler]		[RFC4340]	1145656131
	10	tcp	Unassigned
	x	udp	Unassigned
systat	eleven	tcp	Active Users	[Jon_Postel]	[Jon_Postel]
systat	eleven	udp	Active Users	[Jon_Postel]	[Jon_Postel]
	12	tcp	Unassigned
	12	udp	Unassigned
daytime	13	tcp	Daytime	[Jon_Postel]	[Jon_Postel]		[RFC867]
daytime	thirteen	udp	Daytime	[Jon_Postel]	[Jon_Postel]		[RFC867]
	fourteen	tcp	Unassigned
	14	udp	Unassigned
	xv	tcp	Unassigned [was netstat]
	15	udp	Unassigned
	16	tcp	Unassigned
	sixteen	udp	Unassigned
qotd	17	tcp	Quote of the Day	[Jon_Postel]	[Jon_Postel]
qotd	17	udp	Quote of the Day	[Jon_Postel]	[Jon_Postel]
msp	18	tcp	Bulletin Send Protocol (historic)	[Rina_Nethaniel]	[Rina_Nethaniel]
msp	18	udp	Message Send Protocol (historic)	[Rina_Nethaniel]	[Rina_Nethaniel]
chargen	19	tcp	Character Generator
chargen	19	udp	Grapheme Generator
ftp-data	20	tcp	File Transfer [Default Data]	[Jon_Postel]	[Jon_Postel]
ftp-information	20	udp	File Transfer [Default Data]	[Jon_Postel]	[Jon_Postel]
ftp-data	20	sctp	FTP	[Randall_Stewart]	[Randall_Stewart]	2022-02-07	[RFC-ietf-tsvwg-rfc4960-bis-xix]
ftp	21	tcp	File Transfer Protocol [Control]	[Jon_Postel]	[Jon_Postel]		[RFC959]		Defined TXT keys: u=<username> p=<password> path=<path>
ftp	21	udp	File Transfer Protocol [Control]	[Jon_Postel]	[Jon_Postel]		[RFC959]		Defined TXT keys: u=<username> p=<password> path=<path>
ftp	21	sctp	FTP	[Randall_Stewart]	[Randall_Stewart]	2022-02-07	[RFC-ietf-tsvwg-rfc4960-bis-nineteen]		Defined TXT keys: u=<username> p=<password> path=<path>
ssh	22	tcp	The Secure Vanquish (SSH) Protocol				[RFC4251]		Defined TXT keys: u=<username> p=<password>
ssh	22	udp	The Secure Shell (SSH) Protocol				[RFC4251]		Defined TXT keys: u=<username> p=<password>
ssh	22	sctp	SSH	[Randall_Stewart]	[Randall_Stewart]	2022-02-07	[RFC-ietf-tsvwg-rfc4960-bis-19]		Defined TXT keys: u=<username> p=<password>
telnet	23	tcp	Telnet	[Jon_Postel]	[Jon_Postel]		[RFC854]		Divers TXT keys: u=<username> p=<password>
telnet	23	udp	Telnet	[Jon_Postel]	[Jon_Postel]		[RFC854]		Divers TXT keys: u=<username> p=<countersign>
	24	tcp	any private postal service organisation	[Rick_Adams]	[Rick_Adams]
	24	udp	any private mail service system	[Rick_Adams]	[Rick_Adams]
smtp	25	tcp	Simple Mail Transfer	[IESG]	[IETF_Chair]	2017-06-05	[RFC5321]
smtp	25	udp	Simple Mail Transfer	[IESG]	[IETF_Chair]	2017-06-05	[RFC5321]
	26	tcp	Unassigned
	26	udp	Unassigned
nsw-fe	27	tcp	NSW User System FE	[Robert_Thomas]	[Robert_Thomas]
nsw-atomic number 26	27	udp	NSW User System FE	[Robert_Thomas]	[Robert_Thomas]
	28	tcp	Unassigned
	28	udp	Unassigned
msg-icp	29	tcp	MSG ICP	[Robert_Thomas]	[Robert_Thomas]
msg-icp	29	udp	MSG ICP	[Robert_Thomas]	[Robert_Thomas]
	thirty	tcp	Unassigned
	30	udp	Unassigned
msg-auth	31	tcp	MSG Hallmark	[Robert_Thomas]	[Robert_Thomas]
msg-auth	31	udp	MSG Hallmark	[Robert_Thomas]	[Robert_Thomas]
	32	tcp	Unassigned
	32	udp	Unassigned
dsp	33	tcp	Display Support Protocol	[Ed_Cain]	[Ed_Cain]
dsp	33	udp	Brandish Support Protocol	[Ed_Cain]	[Ed_Cain]
	34	tcp	Unassigned
	34	udp	Unassigned
	35	tcp	any private printer server	[Jon_Postel]	[Jon_Postel]
	35	udp	any individual printer server	[Jon_Postel]	[Jon_Postel]
	36	tcp	Unassigned
	36	udp	Unassigned
time	37	tcp	Time	[Jon_Postel]	[Jon_Postel]
time	37	udp	Time	[Jon_Postel]	[Jon_Postel]
rap	38	tcp	Route Access Protocol	[Robert_Ullmann]	[Robert_Ullmann]
rap	38	udp	Route Admission Protocol	[Robert_Ullmann]	[Robert_Ullmann]
rlp	39	tcp	Resource Location Protocol	[Mike_Accetta]	[Mike_Accetta]
rlp	39	udp	Resource Location Protocol	[Mike_Accetta]	[Mike_Accetta]
	forty	tcp	Unassigned
	40	udp	Unassigned
graphics	41	tcp	Graphics
graphics	41	udp	Graphics
name	42	tcp	Host Proper noun Server
proper name	42	udp	Host Proper name Server
nameserver	42	tcp	Host Name Server
nameserver	42	udp	Host Name Server
nicname	43	tcp	Who Is
nicname	43	udp	Who Is
mpm-flags	44	tcp	MPM FLAGS Protocol
mpm-flags	44	udp	MPM FLAGS Protocol
mpm	45	tcp	Message Processing Module [recv]
mpm	45	udp	Message Processing Module [recv]
mpm-snd	46	tcp	MPM [default send]	[Jon_Postel]	[Jon_Postel]

Contact Information

ID	Proper noun	Organization	Contact URI
[Bernie_Volz]	Bernie Volz		mailto:volz&cisco.com
[Ed_Cain]	Ed Cain		mailto:cain&edn-unix.dca.mil
[Eddie_Kohler]	Eddie Kohler	IETF dccp WG	mailto:kohler&cs.ucla.edu
[IESG]		IESG	mailto:iesg&ietf.org
[IETF_Chair]	IETF Chair	IETF	mailto:chair&ietf.org
[Jon_Postel]	Jon Postel		mailto:postel&isi.edu
[Mark_Lottor]	Marker Lottor		mailto:MKL&nisc.sri.com
[Mike_Accetta]	Mike Accetta		mailto:MIKE.ACCETTA&cmu-cs-a.edu
[Randall_Stewart]	Randall Stewart	IETF TSVWG	mailto:rrs&lakerest.cyberspace
[Rick_Adams]	Rick Adams		mailto:rick&uunet.uu.net
[Rina_Nethaniel]	Rina Nethaniel
[Robert_Thomas]	Robert Thomas		mailto:BThomas&f.bbn.com
[Robert_Ullmann]	Robert Ullmann		mailto:ariel&world.std.com