You have set up SSH keys for allowing you to log into CENTOS 6.3 using ssh authentication, your /etc/sshd_config file has the following because you are wanting to use freenx-server.
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys2
You user has a .ssh folder with 600 ownership
You still get the following error
Login as root
Server refused our key
Simple Solution:
CENTOS 6.3 + SSK KEY AUTH + SELINUX = I AM BOROKEN?
As root, turn off selinux
setenforce 0
OR
http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.3#head-d261fbe9e9ee7564690adf254c8c794cc561666f
Make sure that you setup correctly the selinux context of the public key if you transfer it to a CentOS 6 server with selinux enabled. Otherwise selinux might forbid access to the ~/.ssh/authorized_keys file and by matter of consequence key authentication will not work. In order to setup the correct context you can use:
restorecon -R -v /home/$ACCOUNT/.ssh
http://www.linuxcommand.org/man_pages/restorecon8.html
for example to fix root on CENTOS 6.3 you can use
restorecon -R -v /root .ssh
Output:
[root@unknown-08-00-27-cf-23-69 ~]# restorecon -R -v /root .ssh
restorecon reset /root/.ssh context unconfined_u:object_r:admin_home_t:s0->unconfined_u:object_r:ssh_home_t:s0
restorecon reset /root/.ssh/authorized_keys2 context unconfined_u:object_r:admin_home_t:s0->unconfined_u:object_r:ssh_home_t:s0
Result / correct Solution
Using proof that is works:
usage: setenforce [ Enforcing | Permissive | 1 | 0 ]
[root@unknown-08-00-27-cf-23-69 ~]# setenforce 1
