What is Port?
- When referring to a computer or device, a hardware port resembles a plug-in or connection commonly found on the back of a computer. Hardware ports allow computers to have access to external devices such as computer printers. Below is a short listing of the different computer ports you may find on a computer.
AT Port (Old Keyboard Port)
Firewire port
LPT Port (Printer Port)
PS/2 Port (Keyboard Port and Mouse Port)
Serial Port
Sound in and Line in
Sound out and Line out
USB Port - Term used to describe the process of taking a program that has been written for specific operating systems and moving it to another operating system. For example, taking a program written for Microsoft Windows and moving it to Linux.
- When referring to a network or to the Internet, a software or network port is a location where information is sent through. A commonly used and accessed port is port 80, which is the http port. A listing of commonly known and used ports can also be found on the below listing. Users running Microsoft Windows can utilize the netstat command to view currently active connections that include ports currently being used.Users who wish to block ports on their computer or network can use a software or hardware firewall. If you are unable to get access to a particular port it’s likely that a firewall is already present on the Network or other network settings set by the administrators have been setup.
| Port | Protocol | Description |
| 0 | Reserved | |
| 1 | TCP | TCP Port Service Multiplexer |
| 5 | Remote Job Entry | |
| 7 | TCP, UDP | ECHO |
| 9 | TCP, UDP | Discard |
| 13 | TCP, UDP | Daytime – RFC 867 |
| 17 | TCP, UDP | Quote of the Day |
| 18 | TCP, UDP | Message Send Protocol |
| 19 | TCP | Chargen – RFC 864 |
| 20 | TCP | FTP – Data |
| 21 | TCP | FTP – Control |
| 22 | TCP | SSH Remote Login Protocol |
| 22 | UDP | PCAnywhere |
| 23 | TCP | Telnet |
| 24 | Private e-mail system | |
| 25 | SMTP | |
| 27 | TCP | ETRN |
| 33 | Display Support Protocol | |
| 35 | Private print server | |
| 37 | TCP, UDP | Time – RFC 868 |
| 38 | TCP, UDP | Route Access Protocol |
| 39 | UDP | Resource Location Protocol |
| 42 | Nameserv (Host Name Server) | |
| 43 | Whois | |
| 47 | NI FTP | |
| 48 | Default Audit Daemon | |
| 49 | Login | |
| 50 | Remote Mail Checking Protocol | |
| 52 | XNS Time Protocol | |
| 53 | DNS | |
| 57 | Private terminal access | |
| 58 | XNS mail | |
| 59 | Private file service | |
| 60 | NI mail | |
| 63 | whois++ | |
| 65 | TACACS-Database Service | |
| 66 | Oracle SQL*NET | |
| 67 | Bootstrap Protocol Server, DHCP | |
| 68 | Bootstrap Protocol Client, DHCP | |
| 69 | TFTP | |
| 70 | Gopher | |
| 75 | Private dial out service | |
| 79 | Finger | |
| 80 | HTTP | |
| 80 | TCP | Dungeon Siege game |
| 81 | HOSTS2 Name Server | |
| 82 | XFER Utility | |
| 87 | Any private terminal link | |
| 88 | Kerberos, XBOX 360 | |
| 89 | SU/MIT Telnet Gateway | |
| 92 | Network Printing Protocol | |
| 93 | Device control Protocol | |
| 95 | SUPDUP | |
| 98 | TAC news | |
| 103 | X400 | |
| 106 | 3COM-TSMUX | |
| 107 | Remote Telnet Service | |
| 108 | SNA Gateway Access Server | |
| 109 | POP2 (Post Office Protocol version 2) | |
| 110 | POP3 (Post Office Protocol version 3) | |
| 115 | Simple File Transfer Protocol | |
| 118 | SQL Services | |
| 119 | NNTP | |
| 130 | CISCO FNATIVE | |
| 131 | CISCO TNATIVE | |
| 132 | CISCO SYSMAINT | |
| 135 | Blaster worm | |
| 137 | NETBIOS Name Service | |
| 138 | NETBIOS Datagram Service | |
| 139 | NETBIOS Session Service | |
| 143 | IMAP | |
| 150 | SQL-NET | |
| 151 | HEMS | |
| 152 | Background File Transfer Program | |
| 153 | SGMP | |
| 154 | NETSC | |
| 156 | SQL Service | |
| 158 | PCMail Server | |
| 161 | SNMP | |
| 168 | RSVD | |
| 179 | Border Gateway Protocol | |
| 190 | Gateway Access Control Protocol | |
| 200 | AppleTalk Routing Maintenance | |
| 202 | AppleTalk Name binding | |
| 204 | AppleTalk Echo | |
| 206 | AppleTalk Zone information | |
| 213 | IPX | |
| 217 | dBase Unix | |
| 219 | Unisys ARP | |
| 220 | Interactive Mail Access Protocol v3 | |
| 256 | ||
| 258 | Yak Winsock Personal Chat | |
| 263 | HDAP | |
| 264 | BGMP | |
| 280 | HTTP-mgmt | |
| 315 | DPSI | |
| 321 | PIP | |
| 349 | mftp | |
| 363 | RSVP tunnel | |
| 366 | ODMR | |
| 377 | NEC Corporation | |
| 378 | NEC Corporation | |
| 384 | A Remote Network Server System | |
| 385 | IBM Application | |
| 387 | AppleTalk Update-Based Routing Protocol | |
| 391 | SynOptics SNMP Relay Port | |
| 396 | Novell Netware over IP | |
| 397 | Multi Protocol Trans. Net. | |
| 402 | Genie Protocol | |
| 406 | Interactive Mail Support Protocol | |
| 413 | SMSP | |
| 420 | SMPTE | |
| 430 | UTMPSD | |
| 431 | UTMPSD | |
| 443 | HTTPS | |
| 444 | SNMP | |
| 445 | Microsoft DS | |
| 458 | Apple Quick Time | |
| 511 | PassGo | |
| 514 | Syslog | |
| 515 | Spooler | |
| 519 | Unix time | |
| 525 | Time server | |
| 530 | rpc | |
| 531 | Chat | |
| 533 | Emergency broadcasts | |
| 545 | Apple Quick Time Server | |
| 546 | DHCP Client | |
| 547 | DHCP Server | |
| 563 | SNEWS | |
| 565 | whoami | |
| 568 | Microsoft shuttle | |
| 569 | MSN | |
| 585 | IMAP4+SSL | |
| 666 | Doom Id Software | |
| 711 | Cisco TDP | |
| 799 | ControlIT | |
| 989 | FTP protocol, data, over TLS/SSL | |
| 990 | FTP protocol, control, over TLS/SSL | |
| 992 | Telnet protocol over TLS/SSL | |
| 993 | IMAP4 protocol over TLS/SSL | |
| 994 | IRC protocol over TLS/SSL | |
| 995 | POP3 protocol over TLS/SSL | |
| 1025 | ||
| 1026 | ||
| 1080 | Socks | |
| 1477 | Microsoft SNA Server | |
| 1502 | Shiva | |
| 1701 | L2TP | |
| 1716 | America’s Army | |
| 1755 | Microsoft NetShow | |
| 1812 | RADIUS | |
| 2300 | UDP | Dungeon Siege game |
| 3074 | TCP, UDP | XBOX 360 |
| 3389 | Remote Desktop | |
| 3783 | TCP | Gamespy |
| 4000 | ICQ | |
| 4000 | TCP, UDP | Battle.net, Diablo, and Diablo II. |
| 5190 | AOL (AOL Instant Messenger – AIM) | |
| 5191 | AOL 1 | |
| 5192 | AOL 2 | |
| 5193 | AOL 3 | |
| 5631 | PCAnywhere | |
| 5632 | PCAnywhere | |
| 5800 | TCP | VNC |
| 5801 | TCP | VNC |
| 5900 | TCP | VNC |
| 5901 | TCP | VNC |
| 6073 | UDP | Dungeon Siege game |
| 6112 | TCP, UDP | Battle.net |
| 6113 | TCP, UDP | Battle.net |
| 6114 | TCP, UDP | Battle.net |
| 6115 | TCP, UDP | Battle.net |
| 6116 | TCP, UDP | Battle.net |
| 6117 | TCP, UDP | Battle.net |
| 6118 | TCP, UDP | Battle.net |
| 6119 | TCP, UDP | Battle.net |
| 6500 | Net2Phone Registration | |
| 6667 | IRC | |
| 6667 | TCP | Gamespy |
| 6801 | Net2Phone | |
| 7000 | VDOLive | |
| 7070 | Real Audio | |
| 7075 | Real Audio | |
| 8008 | HTTP alternative | |
| 8080 | HTTP alternative | |
| 9000 | UDP | Asheron’s Call game |
| 9010 | UDP | Asheron’s Call game |
| 9011 | UDP | Asheron’s Call game |
| 9012 | UDP | Asheron’s Call game |
| 9013 | UDP | Asheron’s Call game |
| 12345 | Port used by Trend Micro antivirus program. Port 12345 is also commonly used by variousTrojans such as Netbus. |
|
| 12468 | VXtreme | |
| 17770 | UDP | Battlezone 2 game |
| 17771 | TCP,UDP | Battlezone 2 game |
| 17772 | UDP | Battlezone 2 game |
| 26000 | Quake game | |
| 27015 | TCP | Half-Life |
| 27900 | TCP | Gamespy |
| 28900 | TCP | Gamespy |
| 29900 | TCP | Gamespy |
| 29901 | TCP | Gamespy |
| 33334 | UDP | Empire Earth game |
| 33335 | TCP | Empire Earth game |
| 43188 | ReachOut | |
| 47624 | TCP | Age of Empires game, Baldur’s Gate game, and Close Combat g |
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About The Author
AYYU
I am a blogger since 2010 and I’m the author of this website I'm a systems/network administrator and I enjoy solving complex problems and learning as much as I can about new technologies. I write tutorials based on my work experience and other IT stuff I find interesting. since 2006 in online world also I am a troubleshooter for the well-known website like http://www.fixya.com and many more groups
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