Frequently Used Port Numbers (Unofficial)

TCP

UDP

netstat service

TCP

UDP

Remote File (RF)—used to transfer files between machines

TCP

UDP

WINS

TCP

UDP

Route Access Protocol (RAP)

TCP

Mail Transfer Protocol (MTP)

TCP

Torpark—Onion routing

UDP

Torpark—Control

TCP

UDP

Pointcast

TCP

WIP Message Protocol

TCP

ident—Identification Protocol used by IRC servers to identify users

TCP

UDP

Microsoft EPMAP (End Point Mapper)

TCP

UDP

DMSP, Distributed Mail Service Protocol

TCP

UDP

2DEV “2SP” Port

TCP

UDP

IMMP, Internet Message Mapping Protocol

UDP

securecast1—Outgoing packets to NAI’s servers

TCP

Altiris, Altiris Deployment Client

TCP

Direct Connect Hub

TCP

Direct Connect Client-to-Client

TCP

Cisco protocol

TCP

SMTP over SSL

TCP

STMF, Simple Transportation Management Framework—DOT NTCIP 1101

TCP

UDP

asa-appl-proto, Protocol

TCP

UDP

Modbus, Protocol

TCP

First Class Protocol

TCP

UDP

AOL Instant Messenger, IRC

TCP

OSIsoft PI (VMS), OSISoft PI Server Client Access

TCP

UDP

Common Unix Printing System (CUPS)

TCP

DTCP, Dynamic Tunnel Configuration Protocol

TCP

sun-dr, Remote Dynamic Reconfiguration

UDP

Promise RAID Controller

TCP

SMQP, Simple Message Queue Protocol

TCP

UDP

kerberos_master, Kerberos authentication

UDP

passwd_server, Kerberos Password (kpasswd) server

UDP

userreg_server, Kerberos userreg server

TCP

krb5_prop, Kerberos v5 slave propagation

TCP

UDP

krbupdate [kreg], Kerberos registration

TCP

Conserver serial-console management server

TCP

SpamAssassin spamd daemon

TCP

CMP (Certificate Management Protocol)

TCP

Adobe Flash socket policy server

TCP

cddbp, CD DataBase (CDDB) protocol (CDDBP)—unassigned but widespread use

TCP

Samba Web Administration Tool (SWAT)

TCP

VMware Virtual Infrastructure Client (UDP from server being managed to management console)

UDP

VMware Virtual Infrastructure Client (UDP from server being managed to management console)

TCP

VMware Server Console (TCP from management console to server being Managed)

UDP

VMware Server Console (UDP from server being managed to management console)

TCP

VMware Remote Console

TCP

VMware Server Alternate (if 902 is in use, i.e. SUSE linux)

TCP

Network Console on Acid (NCA)—local tty redirection over OpenSSH

TCP

UDP

Domain Name System (DNS) RNDC Service

TCP

SofaWare Technologies Remote HTTPS management for firewall devices running embedded Check Point FireWall-1 software

TCP

ScimoreDB Database System

TCP

JtoMB

TCP

Opsware agent (aka cogbot)

TCP

NFS or IIS or Teradata

TCP

Often used by Microsoft DCOM services

TCP

Often used by Microsoft DCOM services

UDP

EasyBits School network discovery protocol (for Intel’s CMPC platform)

UDP

phone, conference calling

TCP

Uvora Online

TCP

Suptechnology ERP 2.0

UDP

VLC media player Default port for UDP/RTP stream

TCP

Symantec BindView Control UNIX Default port for TCP management server connections

TCP

Palmer Performance OBDNet

TCP

Altera Quartus jtagd

TCP

PowerFolder P2P Encrypted File Synchronization Program

TCP

WASTE Encrypted File Sharing Program

TCP

NetGuard GuardianPro firewall (NT4-based) Remote Management

UDP

NetGuard GuardianPro firewall (NT4-based) Authentication Client

TCP

UDP

Windows Live Messenger (Whiteboard and Application Sharing)

TCP

Oracle database default listener, in future releases official port 2483

Gadu-Gadu (direct client-to-client)

UDP

Cisco VQP (VLAN Query Protocol) / VMPS

iSketch

TCP

UDP

radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers)

TCP

UDP

radius acct, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers)

TCP

Perforce

TCP

America’s Army Massively multiplayer online game (MMO)

UDP

Valve Steam Client

TCP

Novell Zenworks Remote Control utility

TCP

MQ Telemetry Transport (MQTT) Message Broker

TCP

Leonardo over IP Pro2col Ltd

UDP

Cisco IOS IP Service Level Agreements (IP SLAs) Control Protocol

TCP

Chizmo Networks Transfer Tool

UDP

CAPTAN Test Stand System

TCP

Secure Access Control Server (ACS) for Windows

Oracle Services for Microsoft Transaction Server

TCP

Mail.Ru Agent communication protocol

UDP

Civilization 4 multiplayer

TCP

CPanel default

TCP

CPanel default SSL

TCP

WebHost Manager default

TCP

WebHost Manager default SSL

TCP

CPanel default Web mail

TCP

CPanel default SSL Web mail

TCP

UDP

eklogin Kerberos encrypted remote login (rlogin)

TCP

UDP

zephyr-hm-srv Project Athena Zephyr Notification Service hm-serv connection (should use port 2102)

TCP

Iron Mountain LiveVault Agent

TCP

Iron Mountain LiveVault Agent

UDP

TiVoConnect Beacon

UDP

Tuxanci game server

TCP

MikroTik Remote management for “The Dude”

TCP

MikroTik Secure management for “The Dude”

TCP

Port-A-Pour Remote WinBatch

TCP

ESET Anti-virus updates

TCP

DirectAdmin default & ESET Remote Administration

UDP

Microsoft Office OS X antipiracy network monitor

TCP

HP System Management Redirect to port 2381

UDP

ArmA multiplayer (default for game)

UDP

Halo: Combat Evolved multiplayer

UDP

ArmA multiplayer (default for server reporting) (default port for game +1)

UDP

ArmA multiplayer (default for VoN) (default port for game +3)

TCP

HP Insight Manager default for Web server

TCP

CVS version control system

TCP

SMTP alternate

TCP

UDP

EVault—Data Protection Services

TCP

UDP

RunUO—Ultima Online server

TCP

new ICA—when Session Reliability is enabled, TCP port 2598 replaces port 1494

TCP

SonicWALL Antispam traffic between Remote Analyzer (RA) and Control Center (CC)

TCP

Dark Ages

TCP

Sybase database listener

TCP

XBT Bittorrent Tracker

UDP

XBT Bittorrent Tracker experimental UDP tracker extension

TCP

Knuddels.de

TCP

IBM WebSphere Application Server (WAS) Bootstrap/rmi default

UDP

Megaco Text H.248

UDP

Megaco Binary (ASN.1) H.248

TCP

Symantec AntiVirus Corporate Edition

TCP

Miralix License server

UDP

Distributed Interactive Simulation (DIS), modifiable default

TCP

Miralix Phone Monitor

TCP

Opsware server (Satellite)

TCP

Miralix CSTA

TCP

Miralix GreenBox API

TCP

Miralix InfoLink

TCP

Miralix TimeOut

TCP

Miralix SMS Client Connector

TCP

Miralix OM Server

TCP

Miralix Proxy

TCP

Miralix IVR and Voicemail

TCP

netpd.org

TCP

UDP

NetPanzer

TCP

HTTP used by Tatsoft as the default listen port

TCP

BlackBerry Enterprise Server communication to cloud

TCP

HTTP used by Web caches and the default for the Squid (software)

TCP

HTTP used by Tatsoft as the default client connection

TCP

SAP-Router (routing application proxy for SAP R/3)

TCP

UDP

Debate Gopher backend database system

TCP

Verisys – File Integrity Monitoring Software

TCP

Network Caller ID server

TCP

UDP

ni-visa-remote

TCP

World of Warcraft Online gaming MMORPG

TCP

Club Penguin Disney online game for kids

TCP

UDP

Ventrilo VoIP program used by Ventrilo

UDP

Ventrilo VoIP program used by Ventrilo

TCP

Used by HGG programs

TCP

Oracle Management Remote Agent

TCP

Remote Administrator

TCP

UDP

OpenTTD game (masterserver and content service)

TCP

UDP

OpenTTD game

TCP

UDP

Diablo II game

TCP

Microsoft Ants game

TCP

PrintBuzzer printer monitoring socket server

WatchGuard Authentication Applet—default

TCP

Microsoft Remote Web Workplace administration

TCP

TinyMUD and various derivatives

TCP

Cisco Audio Session Tunneling

TCP

UDP

Aleph One (game)

UDP

Lincoln Electric’s ArcLink/XT

TCP

Axence nVision

TCP

Axence nVision

TCP

Axence nVision

TCP

Axence nVision

UDP

Armagetron Advanced default server port

TCP

Sinatra default server port in development mode (HTTP)

TCP

QualiSystems TestShell Suite Services

TCP

often used by eMule

TCP

Google Desktop Search

UDP

eMule—often used

TCP

McAfee Web Gateway 7 – Default GUI Port HTTP

TCP

McAfee Web Gateway 7 – Default GUI Port HTTPS

TCP

Apprentice

TCP

BladeLogic Agent

TCP

UDP

Solar Data Log (JK client app for PV solar inverters )

TCP

UDP

Home FTP Server web Interface Default Port

TCP

UPnP—Windows network device interoperability

TCP

VTun—VPN Software

UDP

VTun—VPN Software

TCP

Slingbox and Slingplayer

TCP

Iperf (Tool for measuring TCP and UDP bandwidth performance)

UDP

Iperf (Tool for measuring TCP and UDP bandwidth performance)

TCP

SOLICARD ARX

TCP

Sonic Robot Blast 2 : Multiplayer

TCP

UDP

AVM CAPI-over-TCP (ISDN over Ethernet tunneling)

TCP

Yahoo! Messenger

TCP

Binary Floor Control Protocol (BFCP),published as RFC 4582, is a protocol that allows for an additional video channel (known as the content channel) alongside the main video channel in a video-conferencing call that uses SIP. Also used for Session Initiation Protocol (SIP) preferred port for PUBLISH on SIP Trunk to Cisco Unified Presence Server (CUPS)

TCP

IBM Tivoli Framework NetCOOL/Impact[45] HTTP Service

TCP

A-Talk Common connection

TCP

A-Talk Remote server connection

TCP

VPOP3 Mail Server Webmail

TCP

UDP

VPOP3 Mail Server Status

TCP

ProRat Server

TCP

Neverwinter Nights

TCP

UDP

Malware Cerberus RAT

TCP

ConsoleWorks default UI interface

TCP

Extensible Messaging and Presence Protocol (XMPP) client connection over SSL

TCP

UDP

Ginever.net data communication port

TCP

UDP

Ginever.net data communication port

TCP

UDP

Ginever.net data communication port

TCP

UDP

Ginever.net data communication port

TCP

UDP

Ginever.net data communication port

TCP

UDP

Ginever.net data communication port

TCP

UDP

Web Services for Devices (WSDAPI) (only provided by Windows Vista, Windows 7 and Server 2008)

TCP

UDP

WSDAPI Applications to Use a Secure Channel (only provided by Windows Vista, Windows 7 and Server 2008)

TCP

Bouwsoft file/webserver

UDP

Cisco Unified Video Advantage

TCP

OSIsoft PI Server Client Access

TCP

Applix TM1 Admin server

TCP

Hotline tracker server connection

UDP

Hotline tracker server discovery

TCP

VNC remote desktop protocol—for incoming listening viewer, Hotline control connection

TCP

Hotline file transfer connection

TCP

Setiqueue Proxy server client for SETI@Home project

TCP

Hewlett-Packard Data Protector

TCP

Freeciv versions up to 2.0, Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, SAP

TCP

Tidal Enterprise Scheduler master

TCP

IBM Sametime p2p file transfer

TCP

NRPE (Nagios)

TCP

NSCA (Nagios)

UDP

Mikrotik RouterOS Neighbor Discovery Protocol (MNDP)

TCP

UDP

Kaseya

TCP

Operations Manager

TCP

VNC remote desktop protocol—for use over HTTP

TCP

COMIT SE (PCR)

TCP

Adeona client: communications to OpenDHT

TCP

Tidal Enterprise Scheduler agent

TCP

UDP

TeamViewer[51] remote desktop protocol

TCP

Default for Camfrog Chat & Cam Client https://www.camfrog.com

TCP

Brightstor Arcserve Backup

TCP

Nortel Software

TCP

Brightstor Arcserve Backup

TCP

iOperator Protocol Signal Port

TCP

Vizrt System

TCP

Backup Exec Agent Browser

TCP

Blizzard’s Battle.net gaming service, ArenaNet gaming service, Relic gaming sercive

TCP

Club Penguin Disney online game for kids

TCP

Club Penguin Disney online game for kids

UDP

WinMX (see also 6699)

TCP

UDP

planet M.U.L.E.

TCP

Sybase Advantage Database Server

TCP

EMC CLARiiON

TCP

UDP

Netop Business Solutions – NetOp Remote Control

UDP

Netop Business Solutions – NetOp School

TCP

Gobby (and other libobby-based software)

TCP

Gobby 0.5 (and other libinfinity-based software)

UDP

Paradigm Research & Development Jetnet[53] default

TCP

SANE (Scanner Access Now Easy)—SANE network scanner daemon

Windows Live FolderShare client

TCP

Music Playing Daemon (MPD)

UDP

McAfee Network Agent

TCP

Internet Relay Chat (IRC)

TCP

IRC SSL (Secure Internet Relay Chat)—often used

TCP

IRC SSL (Secure Internet Relay Chat)—often used

TCP

WinMX (see also 6257)

UDP

Polycom server broadcast

TCP

Datalogger Support Software Campbell Scientific Loggernet Software

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

UDP

Windows Live Messenger (File transfer)

TCP

UDP

Windows Live Messenger (Voice)

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

BitTorrent tracker

TCP

UDP

BitTorrent part of full range of ports used most often

TCP

Default for Vuze’s built in HTTPS Bittorrent Tracker

TCP

Default for BEA WebLogic Server’s HTTP server, though often changed during installation

TCP

Default for BEA WebLogic Server’s HTTPS server, though often changed during installation

TCP

Default for BMC Software Control-M/Server and Control-M/Agent for Agent-to-Server, though often changed during installation

TCP

Default for BMC Software Control-M/Server and Control-M/Agent for Server-to-Agent, though often changed during installation

TCP

Default for Cisco AON AMC (AON Management Console) [54]

TCP

Zimbra LMTP [mailbox]—local mail delivery

TCP

Zimbra conversion server

TCP

Enemy Territory: Quake Wars

TCP

Peercast

TCP

Peercast

TCP

Tibia

TCP

Zimbra mysql [mailbox]

TCP

Zimbra mysql [logger]

UDP

Sibelius License Server

TCP

BrettspielWelt BSW Boardgame Portal

TCP

Aqumin AlphaVision Remote Command Interface

TCP

iChat server file transfer proxy

TCP

Oracle Cluster File System 2

TCP

Windows backdoor program tini.exe default

TCP

Xivio.com Chat Server Interface

UDP

Unreal Tournament series default server

TCP

Unreal Tournament series default server

TCP

Default used by Smartlaunch Internet Cafe Administration software

TCP

UDP

PowerSchool Gradebook Server

TCP

Default for YSFlight server

TCP

Fixed port used for Adobe Flash Debug Player to communicate with a debugger (Flash IDE, Flex Builder or fdb).[56]

TCP

Commonly used for internet radio streams such as those using SHOUTcast

TCP

Commonly used for internet radio streams such as those using SHOUTcast

TCP

Cisco Systems Unified Call Manager Intercluster

TCP

IBM HTTP Server administration default

TCP

ajp13—Apache JServ Protocol AJP Connector

TCP

XMPP File transfers

TCP

HTTP/TCP Symon Communications Event and Query Engine

TCP

HTTP/TCP Symon Communications Event and Query Engine

TCP

HTTP/TCP Symon Communications Event and Query Engine

TCP

HTTP/TCP Symon Communications Event and Query Engine

TCP

Gadu-Gadu

TCP

UDP

Default port for most Endless Online-based servers

TCP

Apache Tomcat

UDP

FilePhile Master/Relay

TCP

HTTP alternate, VibeStreamer, e.g. McAfee ePolicy Orchestrator (ePO)

TCP

HELM Web Host Automation Windows Control Panel

TCP

Kaspersky AV Control Center

TCP

Hosting Accelerator Control Panel

TCP

Parallels Plesk Control Panel

UDP

Kaspersky AV Control Center

TCP

Splunk Daemon

TCP

HTTP Alternate (http_alt_alt)—used as an alternative to port 8080

UDP

Check Point Cluster Control Protocol

TCP

Sophos Remote Management System

TCP

Sophos Remote Management System

TCP

Sophos Remote Management System

TCP

GoToMyPC

TCP

VMware Server Management User Interface (insecure Web interface). See also port 8333

TCP

Winbox—Default on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS

TCP

Bitcoin JSON-RPC server

TCP

Bitcoin

TCP

VMware Server Management User Interface (secure Web interface). See also port 8222

TCP

SW Soft Plesk Control Panel, Apache Tomcat SSL, Promise WebPAM SSL

TCP

UDP

MapleStory

TCP

UDP

ColdFusion Macromedia/Adobe ColdFusion default and Duke Nukem 3D—default

TCP

DukesterX —default

TCP

Ultra Fractal default server port for distributing calculations over network computers

UDP

SoftPerfect Bandwidth Manager

UDP

SoftPerfect Bandwidth Manager

UDP

TeamSpeak—default

UDP

TeamSpeak—alternate

TCP

WebSphere Application Server SOAP connector default

TCP

Win Media Streamer to Server SOAP connector default

TCP

Atlasz Informatics Research Ltd Secure Application Server

TCP

Atlasz Informatics Research Ltd Secure Application Server

TCP

Sun Answerbook dwhttpd server (deprecated by docs.sun.com)

TCP

GNUmp3d HTTP music streaming and Web interface

TCP

LoLo Catcher HTTP Web interface (www.optiform.com)

TCP

D2GS Admin Console Telnet administration console for D2GS servers (Diablo 2)

TCP

Earthland Relams 2 Server (AU1_2)

TCP

Earthland Relams 2 Server (AU1_1)

TCP

Buffalo LinkSystem Web access

TCP

DBGp

TCP

SqueezeCenter web server & streaming

UDP

UDPCast

Microsoft Sharepoint Authoring Environment

cisco-xremote router configuration

Tor network default

TCP

DBGp Proxy

TCP

Tor often used

TCP

WebSphere Application Server Administration Console secure

TCP

Tor

TCP

Tor

TCP

WebSphere Application Server Administration Console

TCP

WebSphere Application Server HTTP Transport (port 1) default

TCP

Webwasher, Secure Web, McAfee Web Gateway – Default Proxy Port

TCP

Openfire Administration Console

TCP

SqueezeCenter control (CLI)

TCP

Openfire Administration Console (SSL Secured)

UDP

SSMP Message protocol

TCP

Sony Playstation RemotePlay

TCP

IBM Cognos 8 SOAP Business Intelligence and Performance Management

UDP

D-Link Shareport Share storage and MFP printers

TCP

MooseFS distributed file system—master server to chunk servers

TCP

MooseFS distributed file system—master server to clients

TCP

MooseFS distributed file system—chunk servers to clients

TCP

UDP

Network Time System Server

WebCT e-learning portal

TCP

Club Penguin Disney online game for kids

TCP

Tripwire—File Integrity Monitoring Software

UDP

TeamSpeak 3 server default (voice) port (for the conflicting service see the IANA list)

Hydranode—edonkey2000 TELNET control

TCP

Lantronix UDS-10/UDS100 RS-485 to Ethernet Converter TELNET control

Urchin Web Analytics

Webmin—Web-based Linux admin tool

BackupExec

Ericsson Account Manager (avim)

TCP

Lantronix UDS-10/UDS100 RS-485 to Ethernet Converter default

AIX,NeXT, HPUX—rexd daemon control

TCP

Zimbra smtp [mta]—to amavis from postfix

TCP

Zimbra smtp [mta]—back to postfix from amavis

TCP

FRISK Software International’s fpscand virus scanning daemon for Unix platforms

TCP

FRISK Software International’s f-protd virus scanning daemon for Unix platforms

TCP

FRISK Software International’s f-protd virus scanning daemon for Unix platforms

TCP

FRISK Software International’s f-protd virus scanning daemon for Unix platforms

TCP

FRISK Software International’s f-protd virus scanning daemon for Unix platforms

TCP

FRISK Software International’s f-protd virus scanning daemon for Unix platforms

Lock-on: Modern Air Combat

SWAT 4 Dedicated Server

memcached

Savage:Battle for Newerth Server Hosting

Blood Quest Online Server

IPStor Server management communication

TCP

ElevateDB default database port

TCP

Axence nVision

TCP

Axence nVision

UDP

Linden Lab viewer to sim on SecondLife

NetBus—remote administration tool (often Trojan horse). Also used by NetBuster. Little Fighter 2 (TCP).

TCP

NSClient/NSClient++/NC_Net (Nagios)

TCP

LogMeIn Hamachi (VPN tunnel software; also port 32976)

UDP

Takenaka RDI Mirror World on SecondLife

UDP

Linden Lab viewer to sim on SecondLife

TCP

APRS UI-View Amateur Radio UI-WebServer

UDP

Battlefield 1942 and mods

TCP

psyBNC

TCP

Wesnoth

TCP

Kaspersky Network Agent

UDP

Battlefield Vietnam and mods

TCP

shroudBNC

TCP

Mac OS X Server Web (HTTP) service with performance cache

UDP

Iron Mountain Digital online backup

UDP

Battlefield 2 and mods

TCP

Super Dancer Online Extreme(SDO-X)—CiB Net Station Malaysia Server

TCP

DART Reporting server

TCP

UDP

X-BEAT—Status/Version Check

TCP

UDP

X-BEAT

TCP

Panda Software AdminSecure Communication Agent

TCP

Google Talk Voice and Video connections

UDP

Google Talk Voice and Video connections

UDP

Google Talk Voice and Video connections

TCP

Ensim Control Panel

TCP

UDP

Softros LAN Messenger

TCP

4D database SQL Communication

TCP

4D database Client Server Communication

TCP

4D database DB4D Communication

TCP

Softros LAN Messenger

Usermin, Web-based user tool

TCP

DART Reporting server

TCP

Symantec i3 Web GUI server

TCP

AMLFilter, AMLFilter Inc. amlf-admin default port

TCP

FLIR Systems Camera Resource Protocol

Soldat Dedicated Server

Skype Default Protocol

Duke Nukem 3D#Source code Duke Nukem Ports

NetBeans integrated development environment

Synergy: keyboard/mouse sharing software

StepMania: Online: Dance Dance Revolution Simulator

Minecraft Dedicated Server

UDP

Xfire (Firewall Report, UDP_IN)

TCP

Xfire

TCP

CCP’s EVE Online Online gaming MMORPG

TCP

CCP’s EVE Online Online gaming MMORPG

TCP

CCP’s EVE Online Online gaming MMORPG

UDP

(through 27006) id Software’s QuakeWorld master server

TCP

FlexNet Publisher’s License server (from the range of default ports)

Source engine dedicated server port

Source engine dedicated server port (rare)

GoldSrc and Source engine dedicated server port

mongoDB server port

Sub7 default.

UDP

(through 27900) id Software’s QuakeWorld

UDP

Kaillera server

Nintendo Wi-Fi Connection

Nintendo Wi-Fi Connection

UDP

(through 27910) id Software’s Quake II master server

UDP

(through 27969) Activision’s Enemy Territory and id Software’s Quake III Arena, Quake III and Quake Live and some ioquake3 derived games

Bitfighter Common/default Bitfighter Server

Starsiege: Tribes Common/default Tribes v.1 Server

TCP

www.SmartSystemsLLC.com Used by Smart Sale 5.0

Nintendo Wi-Fi Connection

UDP

Call of Duty; Call of Duty: United Offensive; Call of Duty 2; Call of Duty 4: Modern Warfare; Call of Duty: World at War (PC Version)

Perfect World International Used by the Perfect World International Client

Nintendo Wi-Fi Connection

Nintendo Wi-Fi Connection

Nintendo Wi-Fi Connection

Pokémon Netbattle

BitTorrent

TCP

Multiplicity: keyboard/mouse/clipboard sharing software

UDP

Lantronix Discovery for Lantronix serial-to-ethernet devices

TCP

ZangZing agent

TCP

Back Orifice—remote administration tool (often Trojan horse)

ThoughtSignal—Server Communication Service (often Informational)

TCP

TetriNET IRC gateway on some servers

TCP

TetriNET Used for game spectators

TCP

x3Lobby Used by x3Lobby, an internet application.

TCP

MMTSG-mutualed over MMT (encrypted transmission)

TCP

FileNet RPC

TCP

LogMeIn Hamachi (VPN tunnel software; also port 12975)

Linksys PSUS4 print server

UDP

Any of the USGN online games, most notably Counter Strike 2D multiplayer (2D clone of popular CounterStrike computer game)

TCP

Axence nVision

TCP

Digital Video Recorder hardware

TCP

UDP

SafetyNET p Real-time Industrial Ethernet protocol

TCP

Jagex, RuneScape, FunOrb, etc…

TCP

Jagex, RuneScape, FunOrb, etc…