How the SSH instance key is going to be verified when connecting to Unix (AMI Type) instances. If the Connect by SSH Process field is checked, the equivalences with the StrictHostKeyChecking flag are: Note: With the check-new-hard and check-new-soft strategies you may need to increase the Launch Timeout in seconds because it will now take until the instance console is ready, which could be several minutes. If the field is blank, it means there is no time-out which will wait indefinitely for the console.