ssh connection problem.
 

I have installed centos 5.2 at my friends computer. For this I sent centos DVD.

After installing, I tried to connect to his computer through ssh.
But I received "permission denied".

How could I solve this problem?

Is the sshd installed and running?
what is the output from
ps ax | grep ssh
firewall?

Service ssh runs.

When putty connected with this box, prompt asked id and password.
Also I can get putty's security alert for remote server's rsa2 key fingerprint.

I've got ssh debugging reslt as follows;