Maintenance has only 3 active requirements, but each one covers a moment when someone gets deep access to your system. Together they break into 16 determination statements in SP 800-171A, with no organization-defined parameters, so the decisions are yours to make and document. Three Revision 2 requirements are now withdrawn, and nonlocal maintenance now reaches internal network connections, not just external ones.
This course takes every requirement through the same three steps. First you learn what it asks for and the risk behind it. Then you see a practical way to put it in place that fits your environment. Last, you learn how it gets assessed and what evidence proves it. A running case, Harbor Point Machining (a fictional company), shows each step on a system that looks like yours.