well, my "smart" customer say since it's "unauthenticated connections " it should be set to zero
after reset the sshd, the it fail to started, then call me to solve the problem
I try to said no one set to zero but he ask the reason
correct me if I am wrong
this value is about connection which will not pass the authentication. which means, I can have the 10 concurrent user try to login (showing the login screen to input the ID/password)
if set to zero, it simple not allow anyone to connect.
Am I right ?