Protects the information provided and processed by Unix servers, with requirements that apply primarily to Linux servers and can be adapted to Unix servers, on how the operating system is configured and operated regardless of the server's purpose. In Edition 2023 the Baustein carries 17 requirement numbers, 10 of them live: 4 Basis requirements (B, MUSS, to be fulfilled first and without exception), 3 Standard requirements (S, SOLLTE) and 3 requirements for elevated protection needs (H), with 7 numbers withdrawn (ENTFALLEN) and kept for stable numbering. It is applied to an IT system in modelling order R2. The requirements property on this node lists every requirement by number, title, level and responsible role, so a requirement is cited as SYS.1.3.A<n>.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.