About this interactive
The Access Control Models lesson covers six ways to decide who gets in.
Discretionary (DAC): the owner of a resource decides. Whoever holds full rights on a folder can share it with others at their own discretion.
Mandatory (MAC): users have no say. In Security+ terms, an administrator gives each resource a security label (such as confidential or secret) and each user a clearance, and the system compares the two; nobody can pass access on. One correction: the video's example of MAC is a team that has to ask IT or its lead for access. The point of MAC is not who you ask but that access follows labels and clearances that the users cannot change.
Role-based (RBAC): permissions go to a role, and people are put in roles. Move someone out of the role and the access goes with it. The lesson calls it the most common choice.
Rule-based: the same rules apply to every request, whoever sends it, as on a firewall that lets anyone reach the web server on one port and nothing else.
Attribute-based (ABAC): access depends on attributes other than the role, such as location, department, manager or device.
Risk-based: access changes with the risk of the moment, such as a weak password or an unusual sign-in.
Most companies mix models, for example RBAC for staff and rule-based on the firewall. A quick test for each card: what decided this, the owner, a label, a role, a rule for everyone, an attribute, or a risk signal?
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