IIS 7.0 Key Characteristics

IIS 7.0 was built with the following characteristics in mind:

• Simple to use—As previously mentioned, IIS 7.0 does not use the same metabase scheme as previous versions of IIS, but rather uses a series of plain-text XML files for configuration. With IIS 7.0, the state is in the files, thus a change to the files results in an immediate change to the server, site, or application configuration.

• Securely built—The default configuration is set to allow only the system administrator to configure the server, sites, and applications. By using Feature Delegation, system administrators can securely make site and application administration available to down-level administrators without giving more permissions on the server than necessary. The system by default does not store sensitive information like passwords. However, if there is a need to store sensitive information, it is encrypted on the hard disk. In addition to these security features, applications can be isolated to prevent other applications from sharing or reading the settings.

• Extensible — Just as the IIS Manager is extensible, so is the IIS configuration. This is made easy because the schema of IIS is contained in XML files. To extend the schema, just place an XML file in the schemas folder. You’ll see below how the settings are arranged in “sections” within the configuration files.

• Low TCO—By changing to the XML file-based schema, IIS 7.0 is easier to deploy and manage. The file-based schema allows for web settings to be published in the same files as the web-site content. With this used in conjunction with Feature Delegation, the system administrator doesn’t have to be as involved with every site change made on the server. The web.config file can contain both the IIS settings and the ASP.NET settings for a web site permitting centralized control over the site settings. The file-based structure also makes it possible to use standard file systembased tools for maintenance (backup and restore) and security.

• Compatible with previous versions — Applications created for IIS 6.0 will continue to run on IIS 7.0 by calling interfaces such as Admin Base Objects (ABO), the ADSI provider, and the IIS 6.0 WMI provider. Because .NET Framework 2.0 was built into IIS 7.0 from the ground up, current .NET applications will continue to work by calling System.Configuration and System.Web.Configuration. The config files will continue to follow the structure of the web.config and machine.config files from IIS 6.0, as well as add IIS configuration settings to the files.

Source of Information : Wrox Professional IIS 7


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