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Port 3372 Details


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Port(s) Protocol Service Details Source
3372 tcp msdtc MS DTC (Microsoft Distributed Transaction Coordinator) is a Microsoft transaction processing technology. The service is installed by default in Windows 2000 and can be used by MS SQL Server and Microsoft Message Queue Server (MSMQ).

The port is vulnerable to potential DDoS attacks. A remote user may be able to crash the MS DTC service by sending 1024 bytes of random data on TCP port 3372.

If you do not need MS DTC you can set your firewall to block access to port 3372. It is possible for MS DTS to use other ports so you might need to also set your firewall to block any activity by the MS DTS service.
SG
3372 tcp msdtc MS distributed transaction coordinator Nmap
3372 tcp,udp tip2 TIP 2 IANA
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External Resources
SANS ISC: port 3372

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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