Microsoft Windows NT 4.0 Guide Manual de usuario descargar pdf (Pagina 103)

Microsoft

Windows Server

™

2003 White Paper

Windows NT 4.0 Server Upgrade Guide 98

Figure 46. Enabling COM+ partitions

To learn more see “Managing COM+ Partitions in Active Directory” in the Help and Support

Center installed with Windows Server 2003

Security Enhancements in the .NET Framework

The .NET Framework adds a new security model on top of the operating system security that you

may be accustomed to. Before the .NET Framework, application developers and administrators

focused on process-based security models instead of component-based security models.

Process-based security models run all code with the same set of rights as the hosting process or

thread that the code is actually running on. Component-based security models determine security

based on information about the component, called evidence. This new model of component-

based security is called code access security (CAS).

There are many types of evidence for a particular component, such as its author, its signature if

signed, and its source (such as a local drive, a network share, or an URL). With the .NET

Framework, the permissions with which a particular component runs are determined based on the

evidence of a component and the permissions assigned to code groups found to have that

evidence. The figure below compares the two security models.

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Microsoft Windows NT 4.0 Guide Manual de usuario Pagina 103