00:01
Hello student, here the reference monitor is a security concept that enforces the separation of the prevalence between the entities in a system.
00:09
So it is a single point of control for all access to the system resources.
00:15
So isolation is one of the key properties of the reference monitor.
00:20
So it means that the reference monitor must prevent any entity from accessing the resources that is not authorized to access.
00:30
So here this is achieved by using a security policy to define which entities are allowed to access which resources.
00:41
The following credible sources support this explanation.
00:44
So sources are information systems, security, glossary, national institute of standards and technology, nist, spatial publication, and revision 5, august 2020.
00:58
So from this is taken definition.
01:01
Reference monitor, a trusted computing -based tcb component that mediates all access to the object by subject and enforces the system security policy.
01:20
So this means that the reference monitor must be invoked for every access attempt.
01:27
The reference monitor must be isolated from the rest of the system so it cannot be it must be isolated.
01:34
In other words, the isolation property of the reference monitor means that it is a single point of control for all access to the system resources...