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Before we can look at applying fine grain authorization rules, however, we first need to create a page whose functionality depends on the role of the user visiting it.

Let's create a page that lists all of the user accounts in the system in a Grid View.

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The good news is that the tools at our disposal for applying authorization rules work equally well with roles as they do for user accounts.

URL authorization rules can specify roles instead of users.

As soon as a match is found, the user is granted or denied access, depending on if the match was found in an URL authorization makes it easy to specify coarse authorization rules that state what identities are permitted and which ones are denied from viewing a particular page (or all pages in a folder and its subfolders).

However, in certain cases we may want to allow all users to visit a page, but limit the page's functionality based on the visiting user's roles.

Since possession of the role cache cookie is sufficient to prove role membership, if a hacker can somehow gain access to a valid user's cookie he can impersonate that user.

The likelihood of this happening increases if the cookie is persisted on the user's browser.

This may entail showing or hiding data based on the user's role, or offering additional functionality to users that belong to a particular role.

Such fine grain role-based authorization rules can be implemented either declaratively or programmatically (or through some combination of the two).

For more information on cookies, how they work, and their various properties, read this Cookies tutorial. The path attribute enables a developer to limit the scope of a cookie to a particular directory hierarchy.

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