SA3: Communications between servers or applications and client machines must be protected, whether these servers are managed directly by Harvard or via contract with a third-party service provider for Harvard's use (e.g. IaaS, SaaS).
Remote login to all servers must only permit the use of encrypted communications such as ssh. Windows servers must enforce a minimum of 128-bit encryption for Terminal Services and Remote Desktop communication. All servers running SSH must use a minimum of protocol version 2. Use 2-factor VPN to connect through the firewall first.