Discussion on Distinct Features of DAC and MAC
In the realm of cybersecurity, two access control models stand out: Mandatory Access Control (MAC) and Discretionary Access Control (DAC). Each model caters to different needs, depending on the security requirements of a network.
Mandatory Access Control (MAC)
MAC, designed for security-conscious networks like the military or government, is a model where the system determines access based on clearance levels. Unlike DAC, decisions in MAC are not solely based on user ID and ownership, but on objects and tasks. This strict approach ensures that access is granted or denied based on predefined rules and restrictions, enforced by the system administrators.
MAC provides access to users based on their identities and data, making it a secure choice. The settings and policy management are established in a secure network and are limited to system administrators, ensuring that only authorised personnel can make changes. One of MAC's key advantages is its ability to prevent virus flow from a higher level to a lower level, making it a robust choice for highly secure environments.
Discretionary Access Control (DAC)
On the other hand, DAC is an identity-based access control model that allows resource owners to decide who can access their objects. This model is supported by commercial DBMSs and is more suitable for commercial use due to its flexibility. DAC mechanisms are controlled by user identification such as username and password.
In DAC, the owner determines the access privileges, and information flow is not easily controlled. This model is vulnerable to trojan horses and has labor-intensive properties. However, it offers a high level of flexibility with no rules and regulations, making it a good fit for small teams or environments needing flexible and decentralized access management.
An example of DAC is an Instagram account where the owner determines who can view the stories based on followers and tags. This model's discretionary nature allows users to transfer objects or any authenticated information to other users, which can be both a strength and a weakness, depending on the context.
In conclusion, while both DAC and MAC serve the purpose of managing access to resources, they cater to different needs. MAC, with its strict rules and regulations, is ideal for highly secure environments like government or military settings where top-down control is essential. On the other hand, DAC, with its flexibility and user-controlled permissions, is more suitable for small teams or environments needing flexible and decentralized access management.
