max remote forwarded ports?

the below code (on Windows) generates an exception after starting 505 ports on Centos8: "port forwarding for 127.0.0.1 port 50000 failed to start"

var client = new SshClient("centos", "user1", "password1");
try
{
	client.Connect();

	for (uint i = 60001; i <= 61000; i++)
	{
		var port = new ForwardedPortRemote(i, "127.0.0.1", 50000);
		client.AddForwardedPort(port);
		port.Start();
	}
}
catch (Exception x)
{
	MessageBox.Show(x.Message);
}

is it SSH.NET limitation or Windows limitation?

Start with the ForwardedPortRemote loop shown in the issue and reproduce the failure after roughly 505 ports on Windows against CentOS 8. Trace the exception from port.Start() and compare the behavior with the SSH.NET, Windows, and server-side limits; done means identifying which component imposes the limit and recording the evidence or required change.