want client but not localhost

[dorra aa]

Hello.
I installed the radius on a computer and finally the test is successful locally.
Now
I want to do the test on another computer client.Should i install
the Radius on this computer I'm writing ?or just in the terminal powered
the second command: radtest .... But this does not work.because even if I install I get two Radius servers.
I still do not understand this idea.
Thank you for the enlightenment 		 	   		  
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