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IIS Security Authorization < authorization >  
The < authorization > element permits the configuration of user account which is warranted to have direct access to a specific site or application. Authorization should be utilized in tandem with the Authentication functionality to confirm a user identity. Oppositely, Authorization resolves those specific elements in which a user is limited to have and not have access with. IIS outlines two detailed Authentication directives, the Allow and Deny values:

  • Allow rules permits the administrator to identify the user accounts or the user groups which will be warranted access with a an application, site, or even all sites that are listed on a particular server
  • Deny rules permits the administrator to identify the user accounts or the user groups which will NOT be warranted to have access with an application, site, or even all sites that are listed on a particular server.

Configuration

The configuration or authorization specific to sites and applications on a Web server is initialized by the installation of the URL Authorization Module.

URL Authorization Module Installation

  • Windows Server 2008 or Windows Server 2008 R2

    1. Click Start, navigate to Administrative Tools, and then choose and click Server Manager.
    2. Within the Server Manager hierarchy pane, go to expand Roles, and then click on Web Server (IIS).
    3. In the Web Server (IIS) pane, scroll through to the Role Services section, and then click Add Role Services.
    4. On the succeeding Select Role Services page which is the child page of the Add Role Services Wizard, choose and select URL Authorization, and then opt to click Next.
    5. On the page entitled the Confirm Installation Selections page, click Install.
    6. On the page labeled Results, click Close.

  • Windows Vista or Windows 7 Platform

    1. Click Start, and then navigate to Control Panel.
    2. In Control Panel, select Programs and Features, then click Turn Windows Features on or off.
    3. Expand Internet Information Services, then choose URL Authorization, and follow with a click on OK.

  • Supplementing an Authorization Rule

    1. Open Internet Information Services (IIS) Manager:

    For Windows Server 2008 or Windows Server 2008 R2 platform:
    Click Start, navigate to Administrative Tools, and then choose and click Internet Information Services (IIS) Manager.

    For Windows Vista or Windows 7 platform:
    Click Start, and then navigate to Control Panel. Double-click on the Administrative Tools, and then also double-click Internet Information Services (IIS) Manager.

    2. Under the Connections pane, expand the server name, then under it expand Sites, and then navigate to a particular site or application which you are targeting to authorization.

    3. Under the Home pane, double-click on the Authorization Rules.

    4. Supplementing a new authorization rule, under the Actions pane select and click Add Allow Rule... or alternatively select and click on the Add Deny Rule, this is dependent on the nature of your target to either ADD or DENY

    5. Apply the authorization settings that are required by a particular site or application, and then click OK.

    Authorization Rule Configuration

    The configuration of the < authorization > element specifically on the server level within the ApplicationHost.config file, alternatively the application or the site level that is housed in a particular Web.config file.

    Default authorization rules for a whole server are supplemented by the configuration of authorization rules which are rooted at the server itself. Clearing, removal and or the overriding of these set of rules can be overridden by alternate configuration basing platforms from sites and applications.

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