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  2. Access control matrix - Wikipedia

    en.wikipedia.org/wiki/Access_Control_Matrix

    In this matrix example there exist two processes, two assets, a file, and a device. The first process is the owner of asset 1, has the ability to execute asset 2, read the file, and write some information to the device, while the second process is the owner of asset 2 and can read asset 1.

  3. Sensitive compartmented information - Wikipedia

    en.wikipedia.org/wiki/Sensitive_compartmented...

    HUMINT Control System (HCS) HCS is the HUMINT (human-source intelligence) Control System. This system was simply designated "HUMINT" until confusion arose between collateral (regular) HUMINT and the control system. The current nomenclature was chosen to eliminate the ambiguity. [19] There are two compartments HCS-O (Operation) and HCS-P (Product).

  4. Carrier-sense multiple access with collision detection

    en.wikipedia.org/wiki/Carrier-sense_multiple...

    If user A still has more to send, then user A and user B will cause another data collision. A will once again choose a random back-off time between 0 and 1, but user B will choose a back-off time between 0 and 3 – because this is B's second time colliding in a row. Chances are A will "win" this one again.

  5. Access control - Wikipedia

    en.wikipedia.org/wiki/Access_control

    Components of an access control system include: An access control panel (also known as a controller) An access-controlled entry, such as a door, turnstile, parking gate, elevator, or other physical barrier; A reader installed near the entry. (In cases where the exit is also controlled, a second reader is used on the opposite side of the entry.)

  6. TACACS - Wikipedia

    en.wikipedia.org/wiki/TACACS

    Terminal Access Controller Access-Control System (TACACS, / ˈ t æ k æ k s /) refers to a family of related protocols handling remote authentication and related services for network access control through a centralized server.

  7. Attribute-based access control - Wikipedia

    en.wikipedia.org/wiki/Attribute-based_access_control

    Historically, access control models have included mandatory access control (MAC), discretionary access control (DAC), and more recently role-based access control (RBAC). These access control models are user-centric and do not take into account additional parameters such as resource information, the relationship between the user (the requesting ...

  8. Computer access control - Wikipedia

    en.wikipedia.org/wiki/Computer_access_control

    In computer security, general access control includes identification, authorization, authentication, access approval, and audit.A more narrow definition of access control would cover only access approval, whereby the system makes a decision to grant or reject an access request from an already authenticated subject, based on what the subject is authorized to access.

  9. Logical access control - Wikipedia

    en.wikipedia.org/wiki/Logical_access_control

    In computers, logical access controls are tools and protocols used for identification, authentication, authorization, and accountability in computer information systems. Logical access is often needed for remote access of hardware and is often contrasted with the term "physical access", which refers to interactions (such as a lock and key) with ...