This grant type is less secure than the authorization code grant type, as the access token is sent in the URL and can be intercepted. The access token is returned in the URL fragment, which is not sent to the server. Implicit: The client obtains the access token by redirecting the user to the authorization server, where the user grants permission.This is the most secure grant type, as it does not expose the user’s credentials to the client. Authorization code: The client obtains the access token by redirecting the user to the authorization server, where the user grants permission.The resource server verifies the access token and, if it is valid, grants access to the user’s resource.įinally, OAuth 2.0 defines several grant types, which determine how the client obtains the access token.The client sends the access token to the resource server and requests access to the user’s resource.The authorization server authenticates the user and sends an access token to the client.The client application sends a request to the authorization server, asking for an access token.The user (resource owner) grants the client application access to their resource.Then, here’s in a nutshell how the OAuth 2.0 flow works: Resource server: The server that hosts the user’s resource and verifies the access token before allowing access to the resource.Authorization server: The server that authenticates the user and issues access tokens to the client.Client: The application that wants to access the user’s resource.Resource owner: The user who owns the resource and can authorize access to it. ![]() The access token is a code that represents the user’s authorization to access the resources. OAuth 2.0 works by issuing an access token to a user when they grant access to their resources. Will FreeRADIUS Be Your Next RADIUS Server?
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