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Port 5101 Details

known port assignments and vulnerabilities
threat/application/port search:
Port(s) Protocol Service Details Source
5101 tcp,udp applications Yahoo P2P Instant Messages, developer: Yahoo

Borland StarTeam MPX is vulnerable to a denial of service, caused by an integer overflow error by the TmsgBufMsgDeserializeEx function in the instructions for data calculation. By sending a specially-crafted packet to TCP port 5101, a remote attacker could exploit this vulnerability to crash the service.
References: [XFDB-40966]
5101 tcp applications Yahoo Messenger P2P Instant Messages Portforward
5101 tcp applications Yahoo P2P Instant Messages Portforward
5101 tcp admdog (chili!soft asp) Nmap
5101 tcp yahoo-peer Yahoo Messenger Peer-to-Peer Listener (default port) Neophasis
5101 tcp,udp talarian-tcp Talarian_TCP Bekkoame
5101 tcp talarian-tcp Talarian_TCP IANA
5101 udp talarian-udp Talarian_UDP IANA
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External Resources
SANS Internet Storm Center: port 5101

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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