Internet TCP port 102 is primarily used by the ISO-TSAP (ISO Transport Service on top of the TCP) protocol. This protocol is commonly used in industrial control systems such as Siemens S7 PLCs. It is also used in the Message Oriented Middleware (MOM) software, which allows for the exchange of general messages in a distributed system environment. Additionally, port 102 is used by the Microsoft Exchange Server for directory synchronization.
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