What is the major difference between authentication and authorization?

user97142

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Authentication is the process of identifying or validating users which is normally done by login and password where as authorization is the process of giving rights and authority to access particular resources and pages.
 

user95528

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As the first process, authentication provides a way of identifying a user, typically by having the user enter a valid user name and valid password before access is granted. The process of authentication is based on each user having a unique set of criteria for gaining access. The AAA server compares a user's authentication credentials with other user credentials stored in a database. If the credentials match, the user is granted access to the network. If the credentials are at variance, authentication fails and network access is denied.

Following authentication, a user must gain authorization for doing certain tasks. After logging into a system, for instance, the user may try to issue commands. The authorization process determines whether the user has the authority to issue such commands. Simply put, authorization is the process of enforcing policies: determining what types or qualities of activities, resources, or services a user is permitted. Usually, authorization occurs within the context of authentication. Once you have authenticated a user, they may be authorized for different types of access or activity.
 

user156270

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Difference between Authentication and Authorization

Authentication is the process of verifying the identity of a user by obtaining some sort of credentials and using those credentials to verify the user's identity. If the credentials are valid, the authorization process starts. Authentication process always proceeds to Authorization process. More about......Difference between Authentication and Authorization

Winston
 

user157144

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Jul 27, 2013
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authentication means to verify who are you while you are logging to any account. authorization means you have an access to visit or see a particular page or a thing.
 

user156204

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Jul 17, 2013
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In my own understanding...

Authentication is the process to verify / ensure / confirm if a someone or something is real / existing / valid / correct.

Authorization is giving someone a permission to do something in your behalf.
 

user158844

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The ASP.NET authentication scheme that is used to identify users who view an ASP.NET application. An ASP.net application has two separate authentication levels because all requests coming through IIS before it handled by ASP.NET. After IIS authentication schemes ASP.NET implements additional authentication schemes. They are :

Windows Authentication
Forms Authentication
Passport Authentication


ASP.NET allows two ways to authorize access to a given resources, they are URL authorization and File authorization

More about.....difference between authentication and authorization

Chris