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Common TCP/UDP Port Numbers | CyberNcrypt

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Ever wonder how the internet operates? How can you send and receive pictures, emails, phone calls, and view websites from the comfort of your home using an internet-connected device? These actions are dependent on the TCP and UDP port numbers. What are these ports and how do they function?

Prior to delving further into the subject, you must understand what a port is. Ports allow computers to communicate with and connect to other computers on a network. This port is not a physical component, but rather a virtual connection point between two or more computers. The most prevalent ports on the Internet are TCP and UDP.

What Are TCP Ports?

TCP is a connection-oriented protocol that stands for Transmission Control Protocol. In networking, protocols are the rules or specifications that govern the transmission of data between devices. TCP is known as a connection-oriented protocol because it establishes a connection between the sending and receiving devices prior to data transmission.

What Are UDP Ports?

User Datagram Protocol (UDP) is the abbreviation for User Datagram Protocol. User Datagram Protocol is connectionless, so a host device can send data to a recipient without first establishing a connection. UDP ports are contingent on UDP/IP protocols. UDP ports include the DNS port (53), the Dynamic Host Configuration Protocol port (68), and the gaming-related Kerberos port (88).

The following are some common TCP/UDP port numbers

  • 7 Echo
  • 19 Chargen
  • 20-21 FTP
  • 22 SSH/SCP
  • 23 Telnet
  • 25 SMTP
  • 42 WINS Replication
  • 43 WHOIS
  • 49 TACACS
  • 53 DNS
  • 67-68 DHCP/BOOTP
  • 69 TFTP
  • 70 Gopher
  • 79 Finger
  • 80 HTTP
  • 88 Kerberos
  • 102 MS Exchange
  • 110 POP3
  • 113 Ident
  • 119 NNTP (Usenet)
  • 123 NTP
  • 135 Microsoft RPC
  • 137-139 NetBIOS
  • 143 IMAP4
  • 161-162 SNMP
  • 177 XDMCP
  • 179 BGP
  • 201 AppleTalk
  • 264 BGMP
  • 318 TSP
  • 381-383 HP Openview
  • 389 LDAP
  • 411-412 Direct Connect
  • 443 HTTP over SSL
  • 445 Microsoft DS
  • 464 Kerberos
  • 465 SMTP over SSL
  • 497 Retrospect
  • 500 ISAKMP
  • 512 rexec
  • 513 rlogin
  • 514 syslog
  • 515 LPD/LPR
  • 520 RIP
  • 521 RIPng (IPv6)
  • 540 UUCP
  • 554 RTSP
  • 546-547 DHCPv6
  • 560 rmonitor
  • 563 NNTP over SSL
  • 587 SMTP
  • 591 FileMaker
  • 593 Microsoft DCOM
  • 631 Internet Printing
  • 636 LDAP over SSL
  • 639 MSDP (PIM)
  • 646 LDP (MPLS)
  • 691 MS Exchange
  • 860 iSCSI
  • 873 rsync
  • 902 VMware Server
  • 989-990 FTP over SSL
  • 993 IMAP4 over SSL
  • 995 POP3 over SSL
  • 1025 Microsoft RPC
  • 1026-1029 Windows Messenger
  • 1080 SOCKS Proxy
  • 1080 MyDoom
  • 1194 OpenVPN
  • 1214 Kazaa
  • 1241 Nessus
  • 1311 Dell OpenManage
  • 1337 WASTE
  • 1433-1434 Microsoft SQL
  • 1512 WINS
  • 1589 Cisco VQP
  • 1701 L2TP
  • 1723 MS PPTP
  • 1725 Steam
  • 1741 CiscoWorks 2000
  • 1755 MS Media Server
  • 1812-1813 RADIUS
  • 1863 MSN
  • 1985 Cisco HSRP
  • 2000 Cisco SCCP
  • 2002 Cisco ACS
  • 2049 NFS
  • 2082-2083 cPanel
  • 2100 Oracle XDB
  • 2222 DirectAdmin
  • 2302 Halo
  • 2483-2484 Oracle DB
  • 2745 Bagle.H
  • 2967 Symantec AV
  • 3050 Interbase DB
  • 3074 XBOX Live
  • 3124 HTTP Proxy
  • 3127 MyDoom
  • 3128 HTTP Proxy
  • 3222 GLBP
  • 3260 iSCSI Target
  • 3306 MySQL
  • 3389 Terminal Server
  • 3689 iTunes
  • 3690 Subversion
  • 3724 World of Warcraft
  • 3784-3785 Ventrilo
  • 4333 mSQL
  • 4444 Blaster
  • 4664 Google Desktop
  • 4672 eMule
  • 4899 Radmin
  • 5000 UPnP
  • 5001 Slingbox
  • 5001 iperf
  • 5004-5005 RTP
  • 5050 Yahoo! Messenger
  • 5060 SIP
  • 5190 AIM/ICQ
  • 5222-5223 XMPP/Jabber
  • 5432 PostgreSQL
  • 5500 VNC Server
  • 5554 Sasser
  • 5631-5632 pcAnywhere
  • 5800 VNC over HTTP
  • 5900+ VNC Server
  • 6000-6001 X11
  • 6112 Battle.net
  • 6129 DameWare
  • 6257 WinMX
  • 6346-6347 Gnutella
  • 6500 GameSpy Arcade
  • 6566 SANE
  • 6588 AnalogX
  • 6665-6669 IRC
  • 6679/6697 IRC over SSL
  • 6699 Napster
  • 6881-6999 BitTorrent
  • 6891-6901 Windows Live
  • 6970 Quicktime
  • 7212 GhostSurf
  • 7648-7649 CU-SeeMe
  • 8000 Internet Radio
  • 8080 HTTP Proxy
  • 8086-8087 Kaspersky AV
  • 8118 Privoxy
  • 8200 VMware Server
  • 8500 Adobe ColdFusion
  • 8767 TeamSpeak
  • 8866 Bagle.B
  • 9100 HP JetDirect
  • 9101-9103 Bacula
  • 9119 MXit
  • 9800 WebDAV
  • 9898 Dabber
  • 9988 Rbot/Spybot
  • 9999 Urchin
  • 10000 Webmin
  • 10000 BackupExec
  • 10113-10116 NetIQ
  • 11371 OpenPGP
  • 12035-12036 Second Life
  • 12345 NetBus
  • 13720-13721 NetBackup
  • 14567 Battlefield
  • 15118 Dipnet/Oddbob
  • 19226 AdminSecure
  • 19638 Ensim
  • 20000 Usermin
  • 24800 Synergy
  • 25999 Xfire
  • 27015 Half-Life
  • 27374 Sub7
  • 28960 Call of Duty
  • 31337 Back Orifice
  • 33434+ traceroute

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