SSH problem on Ultra 2

@mdgm thank you for your help offer, I've been away from the device for the last couple of days, will do if I go there.

But I discovered this:

Feb 16 17:48:58 vega sshd[6050]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Feb 16 17:48:58 vega sshd[6050]: error: @ WARNING: UNPROTECTED PRIVATE KEY FILE! @
Feb 16 17:48:58 vega sshd[6050]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Feb 16 17:48:58 vega sshd[6050]: error: Permissions 0670 for '/etc/ssh/ssh_host_rsa_key' are too open.
Feb 16 17:48:58 vega sshd[6050]: error: It is recommended that your private key files are NOT accessible by others.
Feb 16 17:48:58 vega sshd[6050]: error: This private key will be ignored.
Feb 16 17:48:58 vega sshd[6050]: error: bad permissions: ignore key: /etc/ssh/ssh_host_rsa_key
Feb 16 17:48:58 vega sshd[6050]: error: Could not load host key: /etc/ssh/ssh_host_rsa_key
Feb 16 17:48:58 vega sshd[6050]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key

I think I know how it happened, I was trying to change the permissions of a file, but I most probably did it too generic. This was also the reason that I did a OS reinstall as well.

Any ideas on how to fix it?