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Port 1581 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
1581 tcp,udp applications Cross-site scripting (XSS) vulnerability in the CAD service in IBM Tivoli Storage Manager (TSM) Client and for Windows allows remote attackers to inject arbitrary web script or HTML via HTTP requests to port 1581, which generate log entries in a dsmerror.log file that is accessible through a certain web interface.
References: [CVE-2007-4348] [BID-26221]

Buffer overflow in Tivoli Storage Manager TSM (1) Server or Storage Agents 3.1 through 5.1, and (2) the TSM Client Acceptor Service 4.2 and 5.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP GET request to port 1580 or port 1581.
References: [CVE-2002-0541] [BID-4500] [BID-4492]

Port also IANA registered for MIL-2045-47001.
1581 udp MIL STD 2045-47001 VMF (official) Wikipedia
1581 tcp,udp mil-2045-47001 MIL-2045-47001 IANA
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Related ports: 1580  

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External Resources
SANS Internet Storm Center: port 1581

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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