Once you complete developing a web application, you need to secure it. This is when the aspect of security comes into picture. There will be some portions of your application which need to be secured from users. Securing an application may need extra hardware to build complex multi-layer systems with firewalls, and also some highly secure features.

Security enables you to provide access to a specified user after the user is authenticated and authorized to access the resources in your web application. The Access Control List is used in the authorization process.

The basic concepts of security are Authentication, Authorization, Impersonation and Data or functional security. Authentication is the process that enables to identify a user, so that only that user is provided access to the resources. Authorization is the process that enables to determine whether a particular user can be given access to the resources that the user requests.

Xamlon is an engine to build XAML applications. This engine can be used as a plug-in with Visual Studio .Net to develop XAML applications. XAML stands for eXtensible Application Markup Language. It is said that this is the markup language that is used to build the user interfaces and the events of the user interfaces in the upcoming Windows Operating System, Longhorn.

This markup language is mostly used to build user interfaces for the software applications very easily. To use this language to build user interfaces, the Xamlon engine is used. When you install the Xamlon engine in your system, if your system has Visual Studio .Net installed then this Xamlon engine is installed as a plug-in for Visual Studio .Net.

Xamlon comes with a three major types of engines, one is for the .Net compact framework, the other is for producing flash swf files called the Flash edition and the final one is the Windows Forms editon.

· .Net compact edition:

This edition is used for building XAML applications for the .Net compact framework using the markup language and the .Net compact framework.

· Flash edition:

This edition is used to create flash applications using the markup language (XAML) and any language in the .Net framework.

· Windows Forms edition:

This edition of Xamlon is used to build windows applications using the markup language very quickly.

The above editions are available as downloads in trial versions and beta versions for testing. Xamlon is available as an MSI download and it is easy to install using this way. The Xamlon engine comes with a lot of sample, an XAML viewer, an XAML Pad and a standalone XAML Editor.