Which operating system features a mandatory access control model and is based on Solaris?

The selection of this operating system is based on its implementation of a mandatory access control (MAC) model, which enhances security by enforcing strict policies on how information can be accessed and shared. Trusted Solaris is specifically designed for environments requiring high security, such as those handling sensitive government or military information. It extends the traditional Solaris OS functionality with additional security features, including role-based access control and the ability to define and enforce security levels for users, processes, and data.

The MAC model used by Trusted Solaris ensures that access controls are consistently applied and that users cannot override or bypass these policies. This makes it distinctly suited for organizations that prioritize security and need a reliable way to manage sensitive information.

Other operating systems listed do not offer the same level of mandatory access control as Trusted Solaris. For example, while Ubuntu, Red Hat, and Debian can implement various security measures, they do not inherently have the same focused architecture for MAC that is built into Trusted Solaris.