Free tools Windows power users keep installed
One-click scans. No signup required.
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
User roles group recurring permissions, but a role is only one input to an access decision. Authentication establishes who is making a request; authorization decides whether that identified user may perform a particular action on a particular resource under the applicable policy.
Authentication identifies the requester; authorization evaluates the request
When a person or software process requests access, the system first needs an identity to evaluate. Authentication establishes that identity. Authorization then applies access-control policy to decide whether the requester can take the requested action on the requested resource. OWASP describes access control in terms of operations performed on resources: OWASP Authorization Cheat Sheet.
For example, a signed-in user may be authenticated, but that does not by itself establish permission to read, update, create, or delete a particular record. The authorization decision depends on the policy for that user, resource, action, and any relevant conditions.
What a user role does
Role-based access control (RBAC) makes recurring permission sets easier to manage by associating permissions with roles and assigning users or groups to those roles. A role might represent a recurring organizational function; its permissions define the actions that function is allowed to perform. See NIST’s overview of role-based access control.
#1 Best Overall
In this model, assigning someone a role supplies policy-relevant permissions. It does not eliminate the need for the application to evaluate each request. The relevant question remains whether this user, with these permissions, may perform this action on this resource.
RBAC and ABAC express different kinds of policy
Attribute-based access control (ABAC) evaluates attributes associated with the requester, the resource, and the request context. Context can include conditions such as time or location. RBAC organizes permissions around assigned roles; ABAC can express decisions that depend on a wider set of policy inputs. Neither model is universally superior: the appropriate model depends on the permission boundaries an application needs to express. NIST describes ABAC in its Guide to Attribute Based Access Control (ABAC) Definition and Considerations.
| Model | Policy information used | Typical boundary it expresses |
|---|---|---|
| RBAC | Permissions associated with roles assigned to users or groups | Access associated with recurring organizational functions |
| ABAC | Attributes of the requester, resource, and request context | Access conditional on attributes such as time or location |
Why a role may not be enough
A role can describe a general permission set without capturing every restriction on a specific record, object, property, or situation. A user may be entitled to open a screen but not to view every record the screen can request. Likewise, permission to access an object does not necessarily authorize every operation on it or every property it contains. OWASP’s guidance addresses authorization at the level of functions, objects, and properties: OWASP API Security Top 10: Broken Function Level Authorization and Broken Object Property Level Authorization.
Recommended Free Tools
For each protected request, the policy and enforcement point should account for the actual resource and action—not only whether the requester can reach a page or endpoint.
Rank #3
Apply least privilege and enforce checks in a trusted layer
Least privilege means granting people and software processes only the permissions needed for their assigned tasks. OWASP states: “The Principle of Least Privilege encourages system designers and implementers to allow running code only the permissions needed to complete the required tasks and no more.” See the OWASP Authorization Cheat Sheet.
Authorization must be enforced by a trusted part of the system. Client-side controls can help shape the interface, but they are not a security boundary: a requester may manipulate client-side behavior or make requests without using the expected screen. The system that serves the protected resource must evaluate whether the requested action is allowed.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical way to frame an access decision
For each protected operation, identify the requester, the resource, the action, and the policy that governs them. A role may contribute the requester’s permissions; attributes or other conditions may further constrain access. Then ensure the decision applies to the specific resource and operation being requested.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstall- Requester: Which authenticated user or process is making the request?
- Resource: Which record, object, property, or other protected item is involved?
- Action: Is the request to read, update, create, delete, or perform another operation?
- Policy: Which role permissions and relevant attributes or contextual conditions govern this request?
- Enforcement: Does a trusted server-side or equivalent enforcement layer verify the permission for this resource and action?
The exact role names, permission rules, and enforcement design depend on the application and its threat model; there is no universal role matrix for an unspecified system.
Quick Recap
Best Value
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
