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Port 4000 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
4000 tcp,udp trojans Trojan.Peacomm (2007-03-02) - trojan horse that drops a system driver which injects some payload and hidden threads directly into the services.exe process, using a sophisticated technique. Once infected, it opens a backdoor to download other malicious programs. Uses UDP ports 4000, 7871, 11271

RemoteAnything, Connect-Back Backdoor, Psyber Streaming Server, Skydance trojans also use port 4000 (TCP), Dune 2000 (UDP).

Port also used by Blizzard Battlenet, Diablo II, Command and Conquer Red Alert (UDP), Warcraft II (UDP), Tiberian Sun, Videon Digital Linux DVR (TCP), Abacast (TCP).

The Festo CECX-X-C1 Modular Master Controller with CoDeSys and CECX-X-M1 Modular Controller with CoDeSys and SoftMotion do not require authentication for connections to certain TCP ports, which allows remote attackers to (1) modify the configuration via a request to the debug service on port 4000 or (2) delete log entries via a request to the log service on port 4001.
References: [CVE-2014-0769]
4000 tcp,udp Diablo II game (unofficial) Wikipedia
4000 tcp trojan Remote Anything, SkyDance Trojans
4000 tcp,udp terabase Terabase (potential conflict, also used by ICQ ) IANA
4000 tcp Connect-BackBackdoor [trojan] Connect-Back Backdoor SANS
4000 tcp SkyDance [trojan] SkyDance SANS
4000 tcp,udp terabase Terabase SANS
4000,6112 tcp applications Blizzard Battlenet Portforward
1234-1237,4000,5400,5009 udp applications Command and Conquer Red Alert Portforward
1234-1237,4000,5400 udp applications Command and Conquer Tiberian Sun Portforward
1234-1237,4000,5400 udp applications Command and Conquer Tiberian Sun Firestorm Portforward
4000,6112 tcp applications DiabloII Portforward
1140-1234,4000 tcp,udp applications Dune 2000 Portforward
4000 tcp,udp applications Eclipse Portforward
3999-4000 tcp applications Remote Anything Portforward
1140-1234,4000 tcp,udp applications Tiberian Sun Portforward
80,1433,4000,11111 tcp applications Video Insight Server Portforward
4000 tcp,udp applications Warp Pipe Portforward
1140,1234,4000 tcp applications Westwood Online Portforward
1234-1237,4000,5009,5400 udp applications Xwis Portforward
4000 tcp applications Portforward
4000 tcp remoteanything neoworx remote-anything slave remote control Nmap
4000 udp icq AOL ICQ instant messaging clent-server communication Nmap
4000 tcp circlemud CircleMUD default server port Neophasis
4000 udp icq ICQ server port Neophasis
4000 udp threat Command and Conquer (UDP) The game "Command and Conquer" by Weswood Studios uses this UDP port. Also uses UDP port 5400. Bekkoame
4000 udp threat ICQ uses this as a control port. Bekkoame
4000 udp threat W32.Witty Bekkoame
28 records found
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Related ports: 3724  3800  5400  6112  7871  11271  

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External Resources
SANS Internet Storm Center: port 4000

Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, 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, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible 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, where dropping some packets is preferable to waiting for delayed data.

Please use the "Add Comment" button below to provide additional information or comments about port 4000.
  User Reviews/Comments:
by anonymous - 2016-04-08 18:25
App: Norwegian iConcierge
Port: 4000
Android Service Name: neoworx remote-anything slave remote control
Open port found by: Fing
App using port found by: OS Monitor
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