Exercise in .NET

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Exercise
Encoding QR Code In VS .NET
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QR Code ISO/IEC18004 Reader In .NET
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Complete the task for your boss. Then answer the following questions to provide your assessment of the risks of each application. 1. What mechanism did you choose to implement authentication Why 2. How did you configure IIS 3. What did you add to the server s Web.config file 4. What code did you write to create the Web service server 5. What code did you write to create the Web service client
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Bar Code Decoder In .NET Framework
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Lesson Summary
QR Code Creation In Visual C#
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QR Code JIS X 0510 Encoder In Visual Studio .NET
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To authenticate to a Web service using the standard .NET Framework classes, define a value for the SoapHttpClientProtocol.Credentials object. WS-Security is a standard released by the WS-Interoperability group to add standards-based security features to Web services. WS-Security features include authentication, encryption, and data integrity. Web Services Enhancements (WSE) is a free download from Microsoft that extends the Web services capabilities included with the .NET Framework to include WS-Security. The most important class included with WSE is WebServicesClientProtocol. After cre ating an instance of this class to represent a remote Web server, you can access the SoapContext.Security class to add user credentials and cryptography certificates. To use WSE, install WSE on both the client and server and add a reference to WSE to your .NET project. Then, replace the standard SoapHttpClientProtocol objects with WebServicesClientProtocol objects by appending Wse to the class names.
Make QR Code ISO/IEC18004 In Visual Basic .NET
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Lesson 3: Maximizing Security for Remoting
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UCC-128 Generator In VS .NET
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PDF 417 Printer In Visual Studio .NET
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Generating UPC-E Supplement 5 In VS .NET
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Lesson 3: Maximizing Security for Remoting
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Barcode Printer In Visual C#
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Remoting provides similar functionality to the Web services discussed in Lesson 2, but it relies on .NET Framework technology to provide better performance than standardsbased Web services can offer. Many of the security concepts are the same as for Web services, however, because remoting servers can be hosted by an ASP.NET server. This lesson discusses best practices for maximizing the security of remoting services and provides code samples for authenticating remoting clients.
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After this lesson, you will be able to
Code 128A Creation In Objective-C
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QR Code JIS X 0510 Decoder In Java
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Describe what remoting is. Explain and apply the best practices for implementing security features into remoting
Creating Barcode In Java
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Recognizing Bar Code In C#.NET
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servers and clients.
Create remoting servers that require authentication and remoting clients capable of pro-
viding user credentials.
Restrict access to a remoting service by using file authorization.
Estimated lesson time: 30 minutes
What Is Remoting
Like Web services, remoting is a communication mechanism for two .NET Framework applications running in separate application domains. Unlike Web services, remoting is not standardized, and both the client and server applications must be built on the .NET Framework. Although not being standardized is a significant disadvantage for hetero geneous environments, remoting adds support for events, the allocation and dealloca tion of objects, and other .NET Framework-related capabilities. Remoting can occur between two .NET Framework applications running on a single computer or on different computers. When remoting links computers running differ ent applications, the applications communicate across a network. However, remoting has no default authentication, authorization, or encryption mechanisms. Therefore, network communications might be subject to attack and require special security con siderations.
See Also
This book will cover security best practices only for using remoting and will not cover the fundamentals of using remoting. For more information about remoting, read An Introduction to Microsoft .NET Remoting Framework on the MSDN Web site at http://msdn .microsoft.com/librar y/en-us/dndotnet/html/introremoting.asp.
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Improving Security When Using External Components and Services
Remoting does not have its own security model. Authentication and authorization between the client (also known as a proxy) and the server (also known as a remote object) must be performed either by the host or within your application. Remoting works with two different types of hosts:
A custom assembly Requires you to create your own custom authentication mechanism because it does not provide any built-in security features. Custom assemblies use TcpChannel for network communications, a specialized protocol based on Transmission Control Protocol (TCP).
See Also For more information about creating custom authentication mechanisms, see Lesson 4 of 5, Implementing Role-Based Security.
ASP.NET Leverages ASP.NET and IIS to provide authentication and authoriza tion. ASP.NET uses HttpChannel, a remoting communication channel that works on top of HTTP.
Unlike Web services clients, remoting clients are typically configured by using a .config file. This .config file typically contains the server s host name and the service s port number. By placing this information into a configuration file, administrators can easily customize the settings to meet the needs of the network deploying the application.
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