The Internet TCP port 20001 is commonly used by the Samsung SmartThings Hub for local communication. It is also utilized by the Microchip Technology's Universal Bootloader (Microchip TCP/IP Stack) for firmware updates. Additionally, the port is used by the SecuRemote TopSecret SFTP, a secure file transfer protocol. However, it's important to note that this port's usage can vary depending on the software or system configuration.
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