WTF, in only 40min, ssh brute force attack !
Jul 14 17:54:56 server1 sshd: Server listening on 0.0.0.0 port 22.
Jul 14 18:36:16 server1 sshd: Invalid user center from 220.127.116.11
thank Venema for TCP Wrapper
I believe that this is a security risk for new installations.
Ok, root cant ssh access the server.
We create a simple user to login and then su to root.
I dont want ssh daemon to be started by default, before i finished with my linux server configuration and add some security measures to prevent issues like that.
And the most significant part is that i had configured my router sshd port to a non known tcp port !!!!