Built-in Permissions

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The .NET Framework comes with numerous permissions to protect different resources. Table 6.1 lists these permissions and their descriptions:

Table 6.1. Full List of Permission Classes Provided by the .NET Framework

Permission Class	Description
System.Data.OleDb.OleDbPermission	Protects access to OLE DB data sources via classes in the System.Data.OleDb namespace.
System.Data.SqlClient.SqlClientPermission	Guards access to a SQL server via classes in the System.Data.SqlClient namespace.
System.Diagnostics.EventLogPermission	Protects reading, writing, creating, and deleting event logs using the System.Diagnostics.EventLog class. Note that only Windows NT “family operating systems have event logs.
System.Diagnostics.PerformanceCounterPermission	Safeguards use of the System.Diagnostics . PerformanceCounter class to access performance counters.
System.DirectoryServices.DirectoryServicesPermission	Controls use of the System.DirectoryServices namespace, which provides access to the Active Directory.
System.Drawing.Printing.PrintingPermission	Manages the ability of managed code to print documents.
System.Messaging.MessageQueuePermission	Protects the ability to use message queues via the System.Messaging namespace. Message queues are useful for cross-process and cross-machine communication.
System.Net.DnsPermission	Guards the right to access DNS servers on the network via the System.Net.Dns class.
System.Net.SocketPermission	Controls the ability to open or accept network socket connections via the System.Net.Sockets.Socket class.
System.Net.WebPermission	Safeguards the ability to access network resources with HTTP using classes in the System.Net namespace.
System.Security.Permissions.EnvironmentPermission	Manages the ability to read and write environment variables using the System.Environment class.
System.Security.Permissions.FileDialogPermission	Protects the use of the File Open/Save dialog via the System.Windows.Forms.FileDialog class. The File dialog is a good way to allow users to provide selected file system access to partially trusted code.
System.Security.Permissions.FileIOPermission	Controls access to the file system. This is primarily, but not exclusively, used in the System.IO namespace.
System.Security.Permissions.IsolatedStorageFilePermission	Guards the ability to use the .NET Framework's isolated storage functionality. Isolated storage is described in Chapter 30, "Using Cryptography with the .NET Framework: The Basics."
System.Security.Permissions.PrincipalPermission	Used to represent a name and a role that you want your code to require via role-based security in the .NET Framework.
System.Security.Permissions.PublisherIdentityPermission	Permission form of publisher evidence granted to code via the .NETFramework security policy.
System.Security.Permissions.ReflectionPermission	Protects the ability to utilize the classes in the System.Reflection namespace. These classes allow you to discover and use types, even if they are not publicly accessible. For instance, you can enumerate all fields in a type, regardless of whether the type is public.
System.Security.Permissions.RegistryPermission	Safeguards the use of the Microsoft.Win32. Registry and Microsoft.Win32.RegistryKey classes to access arbitrary registry keys and values.
System.Security.Permissions.SecurityPermission	Controls access to several different resources, including application domain, remoting, serialization, and threadingclasses. This permission has a hodgepodge of different purposes.
System.Security.Permissions.SiteIdentityPermission	Permission form of site evidence granted to code via the .NET Framework security policy.
System.Security.Permissions.StrongNameIdentityPermission	Permission form of strong name evidence granted to code via the .NET Framework security policy.
System.Security.Permissions.UIPermission	Manages the ability to display UI and use the system clipboard. This permission is used in several classes in different namespaces.
System.Security.Permissions.UrlIdentityPermission	Permission form of URL evidence granted to code via the .NET Framework security policy.
System.Security.Permissions.ZoneIdentityPermission	Permission form of zone evidence granted to code via the .NET Framework security policy.
System.ServiceProcess.ServiceControllerPermission	Guards the ability to use the System. ServiceProcess.ServiceController class, which works with services. Note that only Windows NT “family operating systems support services.

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