Answer:

This could mean that: the username is not a valid user on the target the user is not permitted. The password is invalid for the user. The key was corrupted or an invalid or unknown type. The key was not valid for the user. File permissions on files related to authentication (keys, configuration files, etc) were not correct. Recommended steps to resolve this: Ensure credential was entered correctly in the RN150. Ensure username exists on the target. Review ssh access controls. Review authentication configuration. Ensure private key is not encrypted. Review file permissions on target.