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Port 2766 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
2766 tcp trojan W32.HLLW.Deadhat (2004.02.06) - a worm with backdoor capabilities. It attempts to uninstall the W32.Mydoom.A@mm and W32.Mydoom.B@mm worms, and then it spreads to other systems infected with Mydoom. Also, it spreads through the Soulseek file-sharing program.

Buffer overflow in nlps_server in Sun Solaris x86 2.4, 2.5, and 2.5.1 allows remote attackers to execute arbitrary code as root via a long string beginning with "NLPS:002:002:" to the listen (a.k.a. System V listener) port, TCP port 2766.
References: [CVE-1999-1588], [BID-2319]
2766 udp games Tachyon - The Fringe SG
2766 tcp,udp compaq-scp Compaq SCP IANA
2766 tcp listen System V listener port SANS
2766 tcp nlps Solaris Print Services SANS
2766 tcp listen System V listener port Nmap
2766 tcp threat W32.HLLW.Deadhat Bekkoame
2766 tcp used by Solaris listen/nlps_server. It was part of System V R3 and Solaris. In much the same way that scanning for tcpmux will fingerprint SGI machines, scanning for this port will fingerprint SVR3 (Solaris 2.0) machines. Bekkoame
2700-2800 tcp KnowShowGo P2P (official) Wikipedia
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Related ports: 1080  3127  3128  

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External Resources
SANS Internet Storm Center: port 2766

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.

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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