Microsoft Windows NT 4.0 Guide Manual de usuario descargar pdf (Pagina 97)

Microsoft

Windows Server

™

2003 White Paper

Windows NT 4.0 Server Upgrade Guide 92

IIS 6.0 Security Changes

Perhaps the biggest change in Windows Server 2003 is that IIS 6.0 is not installed by default.

When IIS 6.0 is installed, ASP.NET support is enabled, but traditional ASP and ISAPI extensions

are disabled by default.

If you are upgrading a Windows NT Server 4.0 computer, you will not see these security settings,

because IIS is installed manually on Windows NT 4.0–based computers. You can continue to run

existing ASP Web applications and other ISAPI extensions that you have enabled. By

comparision, when upgrading a Windows 2000-based computer, IIS is installed by default but

disabled; consequently, ASP and ISAPI extensions are disabled.

It is recommended that you do not upgrade but rather perform a clean installation of the operating

system. After a clean installation, if you then install IIS, the Web Service Extensions are

configured as Figure 42 shows.

Figure 42. Default Web Service Extensions configuration folder in IIS 6.0

If you plan on running any earlier ASP applications, you should enable the ASP extension by using

the same Application Server window.

IIS 5.0 Isolation Mode

Another significant security change in IIS 6.0 is its use of the following two isolation modes: IIS 5.0

isolation mode and worker process isolation mode. IIS 5.0 isolation mode keeps your computer as

compatible as possible with older Web applications. It’s designed to help applications that are

dependent on the older memory model and process model of IIS 5.0 to run with success. This

isolation setting should be used only as long as it takes to fix the compatibility issues with the

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Microsoft Windows NT 4.0 Guide Manual de usuario Pagina 97