After completing this video, you will understand alternative authorization models, including role-based authorization and time of day restrictions on authorization. You will also understand the implicit deny principle.
- [Instructor] As we wrap up our discussion…of authorization concepts,…let's talk about a few advanced issues…related to authorization in an access control system.…We need to discuss the implicit deny principle,…rule-based authorization, role-based authorization…and time of day restrictions.…The implicit deny principle otherwise known as default deny…is one of the foundational principles…of access control systems.…It says that anything that is not explicitly allowed…should be denied.…
If a computer system doesn't have explicit instructions…on how to handle a situation,…it should default to denying access.…Firewalls are a common example of the default deny principle…in action.…When a firewall receives a connection request,…it first consults it's rules…to determine whether a rule…explicitly addresses the situation.…If the firewall finds a matching rule,…it carries out the action specified by that rule.…If the firewall does not have explicit guidance…on handling the request, it blocks the connection.…
The default deny principle…
- Identity and access management overview
- Identification mechanisms: user names, access cards, biometrics, and registration
- Authentication factors
- Password authentication protocols
- Identity as a service (IDaaS)
- Enforcing accountability
- Managing credentials with policies
- Using access control lists
- Defending against access control attacks
Skill Level Advanced
1. Identity and Access Management
5. Credential Management
7. Access Control Attacks
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