The Connected/Closed status indicates that the SSH connection attempted by the IC to the ISG failed.
On the ISG...issue the command : 'get event'
Look for a failed SSH login from the IC. Chances are good that the password you supplied on the IC's firewall page does not match the one used on the ISG.
Hope that helps.
well it was not password issue, it was the case of permitted IP issue which were allowed to ssh the isg device
thanks got it resolved !