What is the maximum number of clients that can be connected to a single TCP port?

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The maximum number of clients that can be connected to a single TCP port depends on various factors such as the operating system, hardware resources, network bandwidth, and application design. However, in general, most operating systems allow thousands of concurrent connections to a single TCP port. For example, Linux operating system allows around 65,000 TCP connections per port.

In practice, the maximum number of clients that can be connected to a TCP port also depends on the performance of the underlying application and hardware resources. Hence, it is important to optimize the application design and scalability to handle large numbers of client connections.