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Port 56789 Details


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Port(s) Protocol Service Details Source
56789 tcp webobjects Commonly used default port when configuring programs, and possibly malware, because of the sequential numbers "5 6 7 8 9"

Apple WebObjects Monitor (WO-Monitor) application, also JavaMonitor use port 56789 TCP

Cyber Intel Classification Banner - service agent uses port 56789 by default

Malware: Win32/Autorun.OA worm - it may change the computer system date, delete other programs, or connect to a remote site and await commands from a remote attacker. Opens a backdoor and attempts to connect to 'rj.rufang2005.cn' using TCP port 56789.
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Related ports: 12345  54321  56790  56791  

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External Resources
SANS ISC: port 56789

Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

Please use the "Add Comment" button below to provide additional information or comments about port 56789.
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by Steve - 2020-02-04 05:20
Port 56789 is the default port used by WebObjects WO-Monitor application to control WebObjects Applications.
by anonymous - 2022-08-25 15:17
Port 56789 also used for CYBER INTEL CLASSIFICATION BANNER - SERVICE AGENT
https://www.cyberintelsystems.com/classification-banner/
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