Access denied when trying to access server with PuTTY "invalid user" "failed password"

I installed open-ssh.

Trying to access the server with PuTTY gives me access denied. Logs of the server show Invalid user and failed password.

PermitRootLogin is already changed to yes.

Which configuration (presumably in sshd_config) has to be changed?

1 Answer

I figured out to solve the problem.

The account name had to be written in lower case.