Putty Link Network Error:connection refused

First through the physical terminal into Linux, manually check SSH discovery is not running

/ETC/INIT.D/SSHD status

Use the RPM-V command to check that the package to SSH is normal

/rpm-v Openssh-server

Manually start the service and discover that report permissions are incorrect.

/etc/init.d/sshd start

Starting SSHD:/VAR/EMPTY/SSHD must is owned by root and not group or world-writable.

This is a question of permissions.
Chown-r root.root/var/empty/sshd
chmod 744/var/empty/sshd
Service sshd Restart

Putty Link Network Error:connection refused