Employ [solutions in approved configurations to control the flow of information across security domains are defined;] to control the flow of [information to be controlled when it flows across security domains is defined;] across security domains.
Supplemental
Organizations define approved solutions and configurations in cross-domain policies and guidance in accordance with the types of information flows across classification boundaries. The National Security Agency (NSA) National Cross Domain Strategy and Management Office provides a listing of approved cross-domain solutions. Contact [ncdsmo@nsa.gov](mailto:ncdsmo@nsa.gov) for more information.