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Port 2391 Details


known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
2391 tcp,udp 3com-net-mgmt 3COM Net Management IANA
2300-2400 udp applications Age of Empires II Portforward
2300-2400 udp applications Alpha Centauri Portforward
2300-2400 udp applications Chessmaster 8000 Portforward
2300-2400 udp applications Cossacks Portforward
2300-2400 udp applications DirectX 7 Portforward
2300-2400 udp applications Enemy Engaged 2 Portforward
2300-2400 udp applications Flight Simulator 2000 Portforward
2300-2400 udp applications Flight Simulator 2002 Portforward
2300-2400 udp applications Freelancer Server Portforward
2300-2400 udp applications Janes F-18 Portforward
2300-2400 udp applications MechCommander 2 Portforward
2300-2400 udp applications MSN Game Zone DX Portforward
2300-2400 udp applications Pools of Radiance Ruins of Myth Drannor Portforward
2300-2399 udp applications Rakion Portforward
2300-2400 udp applications Re-Volt Portforward
2300-2400 udp applications Stronghold Crusader Portforward
2300-2400 udp applications Total Annihilation Portforward
2300-2400 udp applications Warlords Battlecry Portforward
2300-2400 udp applications Warlords Battlecry II Portforward
2300-2400 tcp,udp applications Warzone 2100 GameSpy Portforward
21 records found
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External Resources
SANS Internet Storm Center: port 2391

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.

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