Describe the advantages and disadvantages of the four standa

Describe the advantages and disadvantages of the four standard access control models:

Solution

Access control is the ability to allow only authorized users, programs or processes system or resource to be accessed.It generates or denies requests according to a particular security model, of certain permissions to access a resource.It is a set of procedures which is performed by hardware, software and administrators so that they can monitor access and identify users requesting access.

Advantages:

Access control systems or model provide the essential services of authorization, identification and authentication (I&A), access approval, and accountability

authorization specifies what a subject can do

identification and authentication ensure that only legitimate subjects can log on to a system.

access approval grants access during operations, by association of users with the resources that they are allowed to access, based on the authorization policy.

accountability identifies what a subject (or all subjects associated with a user) did.

Disadvantage

There arenot a lot of deployments because it is still kind of new, and because you only get the full benefits when you deploy sufficient infrastructure. Vendors are still playing with the right implementation of the right protocols. There is a lot left to be worked out.