×
Create a new article
Write your page title here:
We currently have 3,189 articles on s23. Type your article name above or create one of the articles listed here!



    s23
    3,189Articles

    Port: Difference between revisions

    Content added Content deleted
    imported>mutante
    mNo edit summary
     
    imported>mutante
     
    (10 intermediate revisions by the same user not shown)
    Line 1:
    == Definition ==
     
    port
     
    Line 9 ⟶ 11:
    - interface: (computer science) computer circuit consisting of the [[hardware]] and associated circuitry that links one device with another (especially a [[computer]] and a hard disk drive or other peripherals)
     
    == Ports in Networking ==
    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
    In an [[IP]] [[network]], a ''port number'' is used to identify a network service, which allows one physical computer to listen to various protocols at the same time. The possible range for port numbers is 1 to 65535. This divides up into:
     
    1-1024 [[well known port]]s
     
    1024-49151 [[registered port|registered]] and [[unregistered port|unregistered]] ports
     
    49152-65535 [[private port|private]] (or dynamic) ports
     
     
    === Well Known Ports ===
     
    The [[well known port]]s are ports between 0 and 1024, assigned by the [[IANA]] and on most systems can only be used by system (or [[root]]) processes or by programs executed by
    privileged users.
     
    To the extent possible, these same port assignments are used with the
    [[UDP]] (RFC 768).
     
     
    ==== 17-110 ====
     
    ports 17-110 (most widely known, complete list below)
     
    qotd 17/tcp Quote of the Day
    qotd 17/udp Quote of the Day
     
    # Jon Postel <postel@isi.edu>
    msp 18/tcp Message Send Protocol
    msp 18/udp Message Send Protocol
     
    # Rina Nethaniel <---none--->
    chargen 19/tcp Character Generator
    chargen 19/udp Character Generator
     
    ftp-data 20/tcp File Transfer [Default Data] <-[[FTP]]
    ftp-data [[20]]/udptcp File Transfer [Default Data] <-[[FTP]]
    ftp-data 2120/tcpudp File Transfer [ControlDefault Data] <-[[FTP]]
     
    ftp 21/udp File Transfer [Control] <-[[FTP]]
    # ftp [[21]]/tcp File Transfer Jon Postel[Control] <postel@isi.edu>-[[FTP]]
    ssh ftp 2221/tcpudp SSHFile RemoteTransfer Login Protocol[Control] <-[[SSHFTP]]
     
    ssh 22/udp SSH Remote Login Protocol <-[[SSH]]
     
    # Tatu Ylonen <ylo@cs.hut.fi>
    telnet ssh 23 [[22]]/tcp TelnetSSH Remote Login Protocol <-[[TelnetSSH]]
    telnet ssh 23 22/udp TelnetSSH Remote Login Protocol <-[[TelnetSSH]]
     
    # Jon Postel <postel@isi.edu>
    telnet 24[[23]]/tcp any private mailTelnet system<-[[Telnet]]
    telnet 2423/udp any private mailTelnet system<-[[Telnet]]
     
    # Rick Adams <rick@UUNET.UU.NET>
    smtp 24 25 24/tcp Simpleany Mailprivate Transfermail <-[[SMTP]]system
    smtp 24 25 24/udp Simpleany Mailprivate Transfermail <-[[SMTP]]system
     
    # Jon Postel <postel@isi.edu>
    # smtp 25/tcp 26/tcp Simple Mail Transfer Unassigned<-[[SMTP]]
    # smtp 25/udp 26/udp Simple Mail Transfer Unassigned<-[[SMTP]]
     
    nsw-fe 27/tcp NSW User System FE
    nsw-fe # 27/udp NSW User26/tcp System FEUnassigned
    # 26/udp Robert Thomas <BThomas@F.BBN.COM>Unassigned
     
    # 28/tcp Unassigned
    # nsw-fe 27/tcp NSW 28/udp User System UnassignedFE
    msg nsw-icpfe 29 27/tcpudp NSW User MSGSystem ICPFE
     
    msg-icp 29/udp MSG ICP
    # 28/tcp Robert Thomas <BThomas@F.BBN.COM>Unassigned
    # 3028/tcpudp Unassigned
     
    # 30/udp Unassigned
    msg-authicp 31 29/tcp MSG AuthenticationICP
    msg-authicp 31 29/udp MSG AuthenticationICP
     
    # Robert Thomas <BThomas@F.BBN.COM>
    # 3230/tcp Unassigned
    # 3230/udp Unassigned
     
    dsp 33/tcp Display Support Protocol
    dsp msg-auth 3331/udp tcp Display SupportMSG ProtocolAuthentication
    msg-auth 31/udp MSG Authentication
    # Ed Cain <cain@edn-unix.dca.mil>
     
    # 34/tcp Unassigned
     
    # 34/udp Unassigned
    # 3532/tcp any private printer serverUnassigned
    # 3532/udp any private printer serverUnassigned
     
    # Jon Postel <postel@isi.edu>
    # dsp 3633/tcp UnassignedDisplay Support Protocol
    # dsp 3633/udp UnassignedDisplay Support Protocol
    time 37/tcp Time
     
    time 37/udp Time
    # 34/tcp Jon Postel <postel@isi.edu>Unassigned
    rap # 38/tcp 34/udp Route Access ProtocolUnassigned
     
    rap 38/udp Route Access Protocol
    # 35 35/tcp any private printer Robert Ullmann <ariel@world.std.com>server
    rlp 35 39 35/tcpudp any Resourceprivate Locationprinter Protocolserver
     
    rlp 39/udp Resource Location Protocol
    # 36/tcp Mike Accetta <MIKE.ACCETTA@CMU-CS-A.EDU>Unassigned
    # 4036/tcpudp Unassigned
     
    # 40/udp Unassigned
    graphics time 41 37/tcp GraphicsTime
    graphics time 41 37/udp GraphicsTime
     
    name 42/tcp Host Name Server
    name rap 42 38/udptcp HostRoute NameAccess ServerProtocol
    nameserver rap 42 38/tcpudp HostRoute NameAccess ServerProtocol
     
    nameserver 42/udp Host Name Server
    nicname rlp 43 39/tcp WhoResource Location IsProtocol
    nicname rlp 43 39/udp WhoResource Location IsProtocol
     
    mpm-flags 44/tcp MPM FLAGS Protocol
     
    mpm-flags 44/udp MPM FLAGS Protocol
    mpm # 45 40/tcp Message Processing Module [recv]Unassigned
    mpm # 45 40/udp Message Processing Module [recv]Unassigned
     
    mpm-snd 46/tcp MPM [default send]
    mpm-snd graphics 4641/udp tcp MPM [default send]Graphics
    graphics 41/udp Graphics
    # Jon Postel <postel@isi.edu>
     
    ni-ftp 47/tcp NI FTP
    ni-ftp name 47 [[42]]/udptcp Host NIName FTPServer
    # name 42/udp Host Name Steve Kille <S.Kille@isode.com>Server
    auditd nameserver 4842/tcp DigitalHost AuditName DaemonServer
    auditd nameserver 4842/udp DigitalHost AuditName DaemonServer
     
    # Larry Scott <scott@zk3.dec.com>
    tacacs nicname 4943/tcp Login Host ProtocolWho (TACACS)Is
    tacacs nicname 4943/udp Login Host ProtocolWho (TACACS)Is
     
    # Pieter Ditmars <pditmars@BBN.COM>
    re mpm-mail-ckflags 50 44/tcp Remote MailMPM CheckingFLAGS Protocol
    re mpm-mail-ckflags 50 44/udp Remote MailMPM CheckingFLAGS Protocol
     
    # Steve Dorner <s-dorner@UIUC.EDU>
    la-maint mpm 51 45/tcp IMPMessage LogicalProcessing AddressModule Maintenance[recv]
    la-maint mpm 51 45/udp IMPMessage LogicalProcessing AddressModule Maintenance[recv]
     
    # Andy Malis <malis_a@timeplex.com>
    xns mpm-timesnd 52 46/tcp XNSMPM Time[default Protocolsend]
    xns mpm-timesnd 52 46/udp XNSMPM Time[default Protocolsend]
     
    # Susie Armstrong <Armstrong.wbst128@XEROX>
    domain ni-ftp 5347/tcp DomainNI Name ServerFTP
    domain ni-ftp 5347/udp DomainNI Name ServerFTP
     
    # Paul Mockapetris <PVM@ISI.EDU>
     
    xns-ch 54/tcp XNS Clearinghouse
    xns-ch auditd 5448/udptcp XNSDigital ClearinghouseAudit Daemon
    auditd 48/udp Digital Audit Daemon
    # Susie Armstrong <Armstrong.wbst128@XEROX>
     
    isi-gl 55/tcp ISI Graphics Language
    isi-gl tacacs 5549/udptcp ISILogin GraphicsHost LanguageProtocol (TACACS)
    xns-auth tacacs 56 49/tcpudp Login Host XNSProtocol Authentication(TACACS)
     
    xns-auth 56/udp XNS Authentication
     
    # Susie Armstrong <Armstrong.wbst128@XEROX>
    re-mail-ck 5750/tcp anyRemote privateMail terminalChecking accessProtocol
    re-mail-ck 5750/udp anyRemote privateMail terminalChecking accessProtocol
     
    # Jon Postel <postel@isi.edu>
    xns la-mailmaint 5851/tcp XNSIMP MailLogical Address Maintenance
    xns la-mailmaint 5851/udp XNSIMP MailLogical Address Maintenance
     
    # Susie Armstrong <Armstrong.wbst128@XEROX>
    xns-time 5952/tcp any privateXNS fileTime serviceProtocol
    xns-time 5952/udp any privateXNS fileTime serviceProtocol
     
    # Jon Postel <postel@isi.edu>
    domain 53/tcp Domain Name 60/tcp UnassignedServer
    domain 53/udp Domain Name 60/udp UnassignedServer
     
    ni-mail 61/tcp NI MAIL
    ni xns-mailch 61 54/udptcp NIXNS MAILClearinghouse
    # xns-ch 54/udp XNS Steve Kille <S.Kille@isode.com>Clearinghouse
     
    acas 62/tcp ACA Services
    acas isi-gl 55/tcp 62/udp ISI ACAGraphics ServicesLanguage
    # isi-gl 55/udp ISI Graphics E. Wald <ewald@via.enet.dec.com>Language
     
    whois++ 63/tcp whois++
    whois++ xns-auth 6356/udptcp XNS whois++Authentication
    xns-auth 56/udp XNS Authentication
    # Rickard Schoultz <schoultz@sunet.se>
     
    covia 64/tcp Communications Integrator (CI)
    covia 57 64 57/udptcp any Communicationsprivate Integratorterminal (CI)access
    # 57 57/udp any private terminal Dan Smith <dan.smith@den.galileo.com>access
     
    tacacs-ds 65/tcp TACACS-Database Service
    tacacs xns-dsmail 65 58/udptcp TACACS-DatabaseXNS ServiceMail
    xns-mail 58/udp XNS Mail
    # Kathy Huber <khuber@bbn.com>
     
    sql*net 66/tcp Oracle SQL*NET
    sql*net 59 66 59/udptcp any private Oraclefile SQL*NETservice
    # 59 59/udp any private file Jack Haverty <jhaverty@ORACLE.COM>service
    bootps 67/tcp Bootstrap Protocol Server
    bootps 60 67/udp Bootstrap60/tcp Protocol ServerUnassigned
    bootpc 60 68/tcp Bootstrap60/udp Protocol ClientUnassigned
     
    bootpc 68/udp Bootstrap Protocol Client
    ni-mail 61/tcp NI MAIL
    # Bill Croft <Croft@SUMEX-AIM.STANFORD.EDU>
    tftp ni-mail 6961/tcp udp Trivial FileNI TransferMAIL
     
    tftp 69/udp Trivial File Transfer
    # acas 62/tcp ACA David Clark <ddc@LCS.MIT.EDU>Services
    gopher acas 70 62/tcpudp ACA GopherServices
     
    gopher 70/udp Gopher
    whois++ 63/tcp whois++
    # Mark McCahill <mpm@boombox.micro.umn.edu>
    netrjs-1 whois++ 71 63/tcp udp Remote Job Servicewhois++
     
    netrjs-1 71/udp Remote Job Service
    netrjs-2 covia 72 64/tcp RemoteCommunications JobIntegrator Service(CI)
    netrjs-2 covia 72 64/udp RemoteCommunications JobIntegrator Service(CI)
     
    netrjs-3 73/tcp Remote Job Service
    netrjs tacacs-3ds 7365/udptcp Remote JobTACACS-Database Service
    netrjs tacacs-4ds 7465/tcpudp Remote JobTACACS-Database Service
     
    netrjs-4 74/udp Remote Job Service
    # sql*net 66/tcp Oracle Bob Braden <Braden@ISI.EDU>SQL*NET
    sql*net 7566/tcp udp any private dial outOracle serviceSQL*NET
     
    75/udp any private dial out service
    # bootps 67/tcp Bootstrap Protocol Jon Postel <postel@isi.edu>Server
    deos bootps 7667/tcp udp Distributed ExternalBootstrap ObjectProtocol StoreServer
    deos bootpc 7668/udp tcp Distributed ExternalBootstrap ObjectProtocol StoreClient
    bootpc 68/udp Bootstrap Protocol Client
    # Robert Ullmann <ariel@world.std.com>
     
    77/tcp any private RJE service
    tftp 7769/udp tcp any privateTrivial RJEFile serviceTransfer
    # tftp 69/udp Trivial File Jon Postel <postel@isi.edu>Transfer
     
    vettcp 78/tcp vettcp
    vettcp gopher 7870/udptcp vettcpGopher
    gopher 70/udp Gopher
    # Christopher Leong <leong@kolmod.mlo.dec.com>
     
    finger 79/tcp Finger
    finger netrjs-1 71/tcp 79/udp Remote Job FingerService
    netrjs-1 71/udp Remote Job Service
    # David Zimmerman <dpz@RUTGERS.EDU>
    http netrjs-2 8072/tcp WorldRemote WideJob Web HTTP <-[[WWW]]Service
    http netrjs-2 8072/udp WorldRemote WideJob Web HTTP <-[[WWW]]Service
    www netrjs-3 8073/tcp WorldRemote WideJob Web HTTP <-[[WWW]]Service
    www netrjs-3 8073/udp WorldRemote WideJob Web HTTP <-[[WWW]]Service
    www netrjs-http4 8074/tcp WorldRemote WideJob Web HTTP <-[[WWW]]Service
    www netrjs-http4 8074/udp WorldRemote WideJob Web HTTP <-[[WWW]]Service
     
    # Tim Berners-Lee <timbl@W3.org>
    hosts2-ns 75 81 75/tcp HOSTS2any private dial Nameout Serverservice
    hosts2-ns 75 81 75/udp HOSTS2any private dial Nameout Serverservice
     
    # Earl Killian <EAK@MORDOR.S1.GOV>
    xfer deos 8276/tcp XFERDistributed UtilityExternal Object Store
    xfer deos 8276/udp XFERDistributed UtilityExternal Object Store
     
    # Thomas M. Smith <Thomas.M.Smith@lmco.com>
    mit-ml-dev 77 83 77/tcp MITany private MLRJE Deviceservice
    mit-ml-dev 77 83 77/udp MITany private MLRJE Deviceservice
     
    # David Reed <--none--->
    ctf vettcp 8478/tcp Common Trace Facilityvettcp
    ctf vettcp 8478/udp Common Trace Facilityvettcp
     
    # Hugh Thomas <thomas@oils.enet.dec.com>
    mit-ml-dev finger 85/tcp MIT79/tcp ML DeviceFinger
    mit-ml-dev finger 85/udp MIT79/udp ML DeviceFinger
     
    # David Reed <--none--->
    mfcobol http 86 [[80]]/tcp MicroWorld Wide Web FocusHTTP Cobol<-[[HTTP]]
    mfcobol http 86 80/udp MicroWorld Wide Web FocusHTTP Cobol<-[[HTTP]]
    # www 80/tcp World Wide Web Simon EdwardsHTTP <--none--->[[HTTP]]
    www 80/udp 87/tcp World anyWide privateWeb terminalHTTP link<-[[HTTP]]
    www-http 80/tcp World Wide Web HTTP 87/udp any private terminal link<-[[HTTP]]
    # www-http 80/udp World Wide Web Jon PostelHTTP <postel@isi.edu>-[[HTTP]]
     
    kerberos 88/tcp Kerberos
    kerberos hosts2-ns 8881/udptcp HOSTS2 Name KerberosServer
    hosts2-ns 81/udp HOSTS2 Name Server
    # B. Clifford Neuman <bcn@isi.edu>
     
    su-mit-tg 89/tcp SU/MIT Telnet Gateway
    su-mit-tg xfer 89/udp SU 82/MITtcp TelnetXFER GatewayUtility
    # xfer 82/udp XFER Mark Crispin <MRC@PANDA.COM>Utility
     
    ########### PORT 90 also being used unofficially by Pointcast #########
    dnsix mit-ml-dev 9083/tcp DNSIX Securit AttributeMIT TokenML MapDevice
    dnsix mit-ml-dev 9083/udp DNSIX Securit AttributeMIT TokenML MapDevice
     
    # Charles Watt <watt@sware.com>
    mit-dov ctf 91 84/tcp MITCommon DoverTrace SpoolerFacility
    mit-dov ctf 91 84/udp MITCommon DoverTrace SpoolerFacility
     
    # Eliot Moss <EBM@XX.LCS.MIT.EDU>
    npp mit-ml-dev 9285/tcp NetworkMIT PrintingML ProtocolDevice
    npp mit-ml-dev 9285/udp NetworkMIT PrintingML ProtocolDevice
     
    # Louis Mamakos <louie@sayshell.umd.edu>
    dcp mfcobol 9386/tcp DeviceMicro ControlFocus ProtocolCobol
    dcp mfcobol 9386/udp DeviceMicro ControlFocus ProtocolCobol
     
    # Daniel Tappan <Tappan@BBN.COM>
    objcall 87 94 87/tcp Tivoliany private Objectterminal Dispatcherlink
    objcall 87 94 87/udp Tivoliany private Objectterminal Dispatcherlink
     
    # Tom Bereiter <--none--->
    supdup kerberos 9588/tcp SUPDUPKerberos
    supdup kerberos 9588/udp SUPDUPKerberos
     
    # Mark Crispin <MRC@PANDA.COM>
    dixie su-mit-tg 9689/tcp DIXIESU/MIT ProtocolTelnet SpecificationGateway
    dixie su-mit-tg 9689/udp DIXIESU/MIT ProtocolTelnet SpecificationGateway
     
    # Tim Howes <Tim.Howes@terminator.cc.umich.edu>
    ########### PORT 90 also being used unofficially by Pointcast #########
    swift-rvf 97/tcp Swift Remote Virtural File Protocol
     
    swift-rvf 97/udp Swift Remote Virtural File Protocol
    # dnsix 90/tcp DNSIX Securit Attribute Token Maurice R. TurcotteMap
    dnsix 90/udp DNSIX Securit Attribute Token Map
    # <mailrus!uflorida!rm1!dnmrt%rmatl@uunet.UU.NET>
     
    tacnews 98/tcp TAC News
    tacnews mit-dov 9891/udptcp TACMIT NewsDover Spooler
    # mit-dov 91/udp MIT Dover Jon Postel <postel@isi.edu>Spooler
     
    metagram 99/tcp Metagram Relay
    metagram npp 99 92/udptcp Network MetagramPrinting RelayProtocol
    # npp 92/udp Network Printing Geoff Goodfellow <Geoff@FERNWOOD.MPK.CA.US>Protocol
     
    newacct 100/tcp [unauthorized use]
    hostname dcp 101 93/tcp NIC HostDevice NameControl ServerProtocol
    hostname dcp 101 93/udp NIC HostDevice NameControl ServerProtocol
     
    # Jon Postel <postel@isi.edu>
    iso-tsap objcall 102 94/tcp ISO-TSAPTivoli ClassObject 0Dispatcher
    iso-tsap objcall 102 94/udp ISO-TSAPTivoli ClassObject 0Dispatcher
     
    # Marshall Rose <mrose@dbc.mtview.ca.us>
    gppitnp supdup 103 95/tcp Genesis Point-to-Point Trans NetSUPDUP
    gppitnp supdup 103 95/udp Genesis Point-to-Point Trans NetSUPDUP
    acr-nema 104/tcp ACR-NEMA Digital Imag. & Comm. 300
    acr-nema dixie 104/udp ACR-NEMA96/tcp Digital Imag. &DIXIE Comm.Protocol 300Specification
    # dixie 96/udp DIXIE Protocol Patrick McNamee <--none--->Specification
     
    cso 105/tcp CCSO name server protocol
    cso swift-rvf 97/tcp Swift 105/udp CCSORemote nameVirtural serverFile protocolProtocol
    swift-rvf 97/udp Swift Remote Virtural File Protocol
    # Martin Hamilton <martin@mrrl.lut.as.uk>
     
    csnet-ns 105/tcp Mailbox Name Nameserver
     
    csnet-ns 105/udp Mailbox Name Nameserver
    tacnews 98/tcp TAC News
    # Marvin Solomon <solomon@CS.WISC.EDU>
    3com-tsmux tacnews 106 98/tcpudp TAC 3COM-TSMUXNews
     
    3com-tsmux 106/udp 3COM-TSMUX
    metagram 99/tcp Metagram Relay
    # Jeremy Siegel <jzs@NSD.3Com.COM>
    metagram 99/udp Metagram Relay
    ########## 106 Unauthorized use by insecure poppassd protocol
     
    rtelnet 107/tcp Remote Telnet Service
    rtelnet newacct 107100/udptcp Remote[unauthorized Telnetuse] Service
     
    # Jon Postel <postel@isi.edu>
    snagas hostname 108101/tcp SNANIC GatewayHost AccessName Server
    snagas hostname 108101/udp SNANIC GatewayHost AccessName Server
     
    # Kevin Murphy <murphy@sevens.lkg.dec.com>
    pop2 iso-tsap 109102/tcp Post Office Protocol ISO-TSAP VersionClass 20
    pop2 iso-tsap 109102/udp Post Office Protocol ISO-TSAP VersionClass 20
     
    # Joyce K. Reynolds <jkrey@isi.edu>
    pop3 gppitnp 110103/tcp Post Office ProtocolGenesis Point-to-Point VersionTrans 3 <-[[POP3]]Net
    pop3 gppitnp 110103/udp Post Office ProtocolGenesis Point-to-Point VersionTrans 3 <-[[POP3]]Net
     
    acr-nema 104/tcp ACR-NEMA Digital Imag. & Comm. 300
    acr-nema 104/udp ACR-NEMA Digital Imag. & Comm. 300
     
    cso 105/tcp CCSO name server protocol
    cso 105/udp CCSO name server protocol
    csnet-ns 105/tcp Mailbox Name Nameserver
    csnet-ns 105/udp Mailbox Name Nameserver
     
    3com-tsmux 106/tcp 3COM-TSMUX
    3com-tsmux 106/udp 3COM-TSMUX
     
    ########## 106 Unauthorized use by insecure poppassd protocol
     
    rtelnet 107/tcp Remote Telnet Service
    rtelnet 107/udp Remote Telnet Service
     
    snagas 108/tcp SNA Gateway Access Server
    snagas 108/udp SNA Gateway Access Server
     
    pop2 109/tcp Post Office Protocol - Version 2
    pop2 109/udp Post Office Protocol - Version 2
     
    pop3 [[110]]/tcp Post Office Protocol - Version 3 <-[[POP3]]
    pop3 110/udp Post Office Protocol - Version 3 <-[[POP3]]
     
    === Common but unregistered ports ===
     
    The [[unregistered port]]s are ports above 1024 (up to 65535) that may be on common use but are not registered with the [[IANA]].
     
    === All ports ===
     
    see [[:Category:Ports]] and help it grow.
     
    ==== External Links ====
    Complete (long!) list here:
     
    * http://www.iana.org/assignments/port-numbers
     
    [[Category:Definitions]]
    [[Category:Computer]]
    [[Category:Networking]]
    [[Category:Ports]]

    Latest revision as of 18:15, 25 April 2006

    Definition[edit]

    port

    - a place (seaport or airport) where people and merchandise can enter or leave a country

    - sweet dark-red dessert wine originally from Portugal

    - an opening (in a wall or ship or armored vehicle) for firing through

    - interface: (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals)

    Ports in Networking[edit]

    In an IP network, a port number is used to identify a network service, which allows one physical computer to listen to various protocols at the same time. The possible range for port numbers is 1 to 65535. This divides up into:

    1-1024 well known ports
    
    1024-49151 registered and unregistered ports
    
    49152-65535 private (or dynamic) ports
    


    Well Known Ports[edit]

    The well known ports are ports between 0 and 1024, assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users.

    To the extent possible, these same port assignments are used with the UDP (RFC 768).


    17-110[edit]

    ports 17-110 (most widely known, complete list below)

    qotd             17/tcp    Quote of the Day
    qotd             17/udp    Quote of the Day
    
    msp              18/tcp    Message Send Protocol
    msp              18/udp    Message Send Protocol
    
    chargen          19/tcp    Character Generator
    chargen          19/udp    Character Generator
    
    ftp-data         20/tcp    File Transfer [Default Data] <-FTP
    ftp-data         20/udp    File Transfer [Default Data] <-FTP
    
    ftp              21/tcp    File Transfer [Control] <-FTP
    ftp              21/udp    File Transfer [Control] <-FTP
    


    ssh              22/tcp    SSH Remote Login Protocol <-SSH
    ssh              22/udp    SSH Remote Login Protocol <-SSH
    
    telnet           23/tcp    Telnet <-Telnet
    telnet           23/udp    Telnet <-Telnet
    
    24               24/tcp    any private mail system
    24               24/udp    any private mail system
    
    smtp             25/tcp    Simple Mail Transfer <-SMTP
    smtp             25/udp    Simple Mail Transfer <-SMTP
    
    #                26/tcp    Unassigned
    #                26/udp    Unassigned
    
    nsw-fe           27/tcp    NSW User System FE
    nsw-fe           27/udp    NSW User System FE
    
    #                28/tcp    Unassigned
    #                28/udp    Unassigned
    
    msg-icp          29/tcp    MSG ICP
    msg-icp          29/udp    MSG ICP
    
    #                30/tcp    Unassigned
    #                30/udp    Unassigned
    
    msg-auth         31/tcp    MSG Authentication
    msg-auth         31/udp    MSG Authentication
    


    #                32/tcp    Unassigned
    #                32/udp    Unassigned
    
    dsp              33/tcp    Display Support Protocol
    dsp              33/udp    Display Support Protocol
    
    
    #                34/tcp    Unassigned
    #                34/udp    Unassigned
    
    35               35/tcp    any private printer server
    35               35/udp    any private printer server
    
    #                36/tcp    Unassigned
    #                36/udp    Unassigned
    
    time             37/tcp    Time
    time             37/udp    Time
    
    rap              38/tcp    Route Access Protocol
    rap              38/udp    Route Access Protocol
    
    rlp              39/tcp    Resource Location Protocol
    rlp              39/udp    Resource Location Protocol
    


    #                40/tcp    Unassigned
    #                40/udp    Unassigned
    
    graphics         41/tcp    Graphics
    graphics         41/udp    Graphics
    
    name             42/tcp    Host Name Server
    name             42/udp    Host 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]
    mpm-snd          46/udp    MPM [default send]
    
    ni-ftp           47/tcp    NI FTP
    ni-ftp           47/udp    NI FTP
    


    auditd           48/tcp    Digital Audit Daemon
    auditd           48/udp    Digital Audit Daemon
    
    tacacs           49/tcp    Login Host Protocol (TACACS)
    tacacs           49/udp    Login Host Protocol (TACACS)
    


    re-mail-ck       50/tcp    Remote Mail Checking Protocol
    re-mail-ck       50/udp    Remote Mail Checking Protocol
    
    la-maint         51/tcp    IMP Logical Address Maintenance
    la-maint         51/udp    IMP Logical Address Maintenance
    
    xns-time         52/tcp    XNS Time Protocol
    xns-time         52/udp    XNS Time Protocol
    
    domain           53/tcp    Domain Name Server
    domain           53/udp    Domain Name Server
    
    xns-ch           54/tcp    XNS Clearinghouse
    xns-ch           54/udp    XNS Clearinghouse
    
    isi-gl           55/tcp    ISI Graphics Language
    isi-gl           55/udp    ISI Graphics Language
    
    xns-auth         56/tcp    XNS Authentication
    xns-auth         56/udp    XNS Authentication
    
    57               57/tcp    any private terminal access
    57               57/udp    any private terminal access
    
    xns-mail         58/tcp    XNS Mail
    xns-mail         58/udp    XNS Mail
    
    59               59/tcp    any private file service
    59               59/udp    any private file service
    
    60               60/tcp    Unassigned
    60               60/udp    Unassigned
    
    ni-mail          61/tcp    NI MAIL
    ni-mail          61/udp    NI MAIL
    
    acas             62/tcp    ACA Services
    acas             62/udp    ACA Services
    
    whois++          63/tcp    whois++
    whois++          63/udp    whois++
    
    covia            64/tcp    Communications Integrator (CI)
    covia            64/udp    Communications Integrator (CI)
    
    tacacs-ds        65/tcp    TACACS-Database Service
    tacacs-ds        65/udp    TACACS-Database Service
    
    sql*net          66/tcp    Oracle SQL*NET
    sql*net          66/udp    Oracle SQL*NET
    
    bootps           67/tcp    Bootstrap Protocol Server
    bootps           67/udp    Bootstrap Protocol Server
    bootpc           68/tcp    Bootstrap Protocol Client
    bootpc           68/udp    Bootstrap Protocol Client
    
    tftp             69/tcp    Trivial File Transfer
    tftp             69/udp    Trivial File Transfer
    
    gopher           70/tcp    Gopher
    gopher           70/udp    Gopher
    
    netrjs-1         71/tcp    Remote Job Service
    netrjs-1         71/udp    Remote Job Service
    netrjs-2         72/tcp    Remote Job Service
    netrjs-2         72/udp    Remote Job Service
    netrjs-3         73/tcp    Remote Job Service
    netrjs-3         73/udp    Remote Job Service
    netrjs-4         74/tcp    Remote Job Service
    netrjs-4         74/udp    Remote Job Service
    
    75               75/tcp    any private dial out service
    75               75/udp    any private dial out service
    
    deos             76/tcp    Distributed External Object Store
    deos             76/udp    Distributed External Object Store
    
    77               77/tcp    any private RJE service
    77               77/udp    any private RJE service
    
    vettcp           78/tcp    vettcp
    vettcp           78/udp    vettcp
    
    finger           79/tcp    Finger
    finger           79/udp    Finger
    
    http             80/tcp    World Wide Web HTTP <-HTTP
    http             80/udp    World Wide Web HTTP <-HTTP
    www              80/tcp    World Wide Web HTTP <-HTTP
    www              80/udp    World Wide Web HTTP <-HTTP
    www-http         80/tcp    World Wide Web HTTP <-HTTP
    www-http         80/udp    World Wide Web HTTP <-HTTP
    
    hosts2-ns        81/tcp    HOSTS2 Name Server
    hosts2-ns        81/udp    HOSTS2 Name Server
    
    xfer             82/tcp    XFER Utility
    xfer             82/udp    XFER Utility
    
    mit-ml-dev       83/tcp    MIT ML Device
    mit-ml-dev       83/udp    MIT ML Device
    
    ctf              84/tcp    Common Trace Facility
    ctf              84/udp    Common Trace Facility
    
    mit-ml-dev       85/tcp    MIT ML Device
    mit-ml-dev       85/udp    MIT ML Device
    
    mfcobol          86/tcp    Micro Focus Cobol
    mfcobol          86/udp    Micro Focus Cobol
    
    87               87/tcp    any private terminal link
    87               87/udp    any private terminal link
    
    kerberos         88/tcp    Kerberos
    kerberos         88/udp    Kerberos
    
    su-mit-tg        89/tcp    SU/MIT Telnet Gateway
    su-mit-tg        89/udp    SU/MIT Telnet Gateway
    
    ########### PORT 90 also being used unofficially by Pointcast #########
    
    dnsix            90/tcp    DNSIX Securit Attribute Token Map
    dnsix            90/udp    DNSIX Securit Attribute Token Map
    
    mit-dov          91/tcp    MIT Dover Spooler
    mit-dov          91/udp    MIT Dover Spooler
    
    npp              92/tcp    Network Printing Protocol
    npp              92/udp    Network Printing Protocol
    
    dcp              93/tcp    Device Control Protocol
    dcp              93/udp    Device Control Protocol
    
    objcall          94/tcp    Tivoli Object Dispatcher
    objcall          94/udp    Tivoli Object Dispatcher
    
    supdup           95/tcp    SUPDUP
    supdup           95/udp    SUPDUP
    
    dixie            96/tcp    DIXIE Protocol Specification
    dixie            96/udp    DIXIE Protocol Specification
    
    swift-rvf        97/tcp    Swift Remote Virtural File Protocol
    swift-rvf        97/udp    Swift Remote Virtural File Protocol
    


    tacnews          98/tcp    TAC News
    tacnews          98/udp    TAC News
    
    metagram         99/tcp    Metagram Relay
    metagram         99/udp    Metagram Relay
    
    newacct         100/tcp    [unauthorized use] 
    
    hostname        101/tcp    NIC Host Name Server
    hostname        101/udp    NIC Host Name Server
    
    iso-tsap        102/tcp    ISO-TSAP Class 0
    iso-tsap        102/udp    ISO-TSAP Class 0
    
    gppitnp         103/tcp    Genesis Point-to-Point Trans Net
    gppitnp         103/udp    Genesis Point-to-Point Trans Net
    
    acr-nema        104/tcp    ACR-NEMA Digital Imag. & Comm. 300
    acr-nema        104/udp    ACR-NEMA Digital Imag. & Comm. 300
    
    cso             105/tcp    CCSO name server protocol
    cso             105/udp    CCSO name server protocol
        
    csnet-ns        105/tcp    Mailbox Name Nameserver
    csnet-ns        105/udp    Mailbox Name Nameserver
    
    3com-tsmux      106/tcp    3COM-TSMUX
    3com-tsmux      106/udp    3COM-TSMUX
    
    ##########      106        Unauthorized use by insecure poppassd protocol
    
    rtelnet         107/tcp    Remote Telnet Service 
    rtelnet         107/udp    Remote Telnet Service
    
    snagas          108/tcp    SNA Gateway Access Server
    snagas          108/udp    SNA Gateway Access Server
    
    pop2            109/tcp    Post Office Protocol - Version 2
    pop2            109/udp    Post Office Protocol - Version 2
    
    pop3            110/tcp    Post Office Protocol - Version 3 <-POP3
    pop3            110/udp    Post Office Protocol - Version 3 <-POP3
    

    Common but unregistered ports[edit]

    The unregistered ports are ports above 1024 (up to 65535) that may be on common use but are not registered with the IANA.

    All ports[edit]

    see Category:Ports and help it grow.

    External Links[edit]

    Complete (long!) list here:

    Cookies help us deliver our services. By using our services, you agree to our use of cookies.
    Cookies help us deliver our services. By using our services, you agree to our use of cookies.