sshd_config file:

To disable tunneled clear text passwords, change to no here!

PasswordAuthentication yes

PermitEmptyPasswords no

"PasswordAuthentication yes" is the default value. we don't need add "PasswordAuthentication yes" as shown below?

To disable tunneled clear text passwords, change to no here!

PasswordAuthentication yes

PermitEmptyPasswords no

PasswordAuthentication yes (adding this line is not necessary right?)