Internet Information Services (IIS) is a web server created by Microsoft for use with Windows operating systems. IIS supports protocols like HTTP, HTTPS, FTP, and SMTP. It includes features like sites, applications, and virtual directories to organize and serve content. IIS can run in either classic or integrated mode, with integrated taking full advantage of newer IIS capabilities. Application pools allow isolating applications from one another for security and stability. IIS includes additional components like connection strings, settings, file types, and directories.

1. IIS Intro
MUHAMMAD AMIR – XAVOR LAHORE

2. IIS
Internet Information Services (IIS, formerly Internet Information Server) is an extensible web
server created by Microsoft for use with Windows NT family.[2] IIS
supports HTTP, HTTPS, FTP, FTPS, SMTP and NNTP. It has been an integral part of the Windows NT
family since Windows NT 4.0, though it may be absent from some editions (e.g. Windows XP
Home edition). IIS is not turned on by default when Windows is installed. The IIS Manager is
accessed through the Microsoft Management Console or Administrative Tools in the Control
Panel.

3. IIS
In IIS, you can create sites, applications, and virtual directories to share information with users
over the Internet, an intranet, or an extranet.
 Site: A site is a container for applications and virtual directories, and you can access it through
one or more unique bindings.
 Applications: An application is a group of files that delivers content or provides services over
protocols, such as HTTP. When you create an application in IIS, the application's path becomes
part of the site's URL.
 Virtual Directories: A virtual directory is a directory name (also referred to as path) that you
specify in IIS and map to a physical directory on a local or remote server. The directory name
then becomes part of the application's URL.
http://www.iis.net/learn/get-started/planning-your-iis-architecture/understanding-sites-
applications-and-virtual-directories-on-iis

4. IIS
 Classic Mode: is where IIS only works with ISAPI extensions and ISAPI filters directly. This is
how IIS 6 and below behaved. Using classic mode, ASP.NET is simply an ISAPI extension
(aspnet_isapi.dll) and an ISAPI filter (aspnet_filter.dll). When using classic mode the server uses
two pipelines to handle requests, one for native code and the other for managed code. In this
mode the application doesn't take full advantage of everything IIS 7.X has to offer.
 Integrated mode: handles all requests through a unified pipeline for IIS and is tightly
integrated with ASP.NET through that same pipeline. ASP.NET sees every relevant request and
manipulates things along the way rather than acting as an external plugin. With integrated mode
ASP.NET runs much more efficiently in IIS and will yield greater performance for your site.
Some legacy code may require that you run in classic mode to execute without error. To take full
advantage of IIS we strongly encourage you to review your code if your application throws an
error in Integrated but runs fine in Classic.

5. IIS
App-Pool:
 Application pools allow you to isolate your applications from one another, even if they are
running on the same server. This way, if there is an error in one app, it won't take down other
applications.
 Additionally, applications pools allow you to separate different apps which require different
levels of security.
Here's a good resource: http://www.developer.com/net/asp/article.php/2245511/IIS-and-
ASPNET-The-Application-Pool.htm

6. IIS Some Components
 Connection String
 Application Settings
 Mime-type
 Configuration Editor
 Default Document
 Directory Browsing
 IsAPI Filters

7. IIS Some Components
Possible Cause: This is a common issue and happens when IIS is installed after VS or .NET
framework.
Resolution: Use aspnet_regiis.exe to register version of .NET framework you are using.

8. IIS Some Components
Possible Cause: You are missing ASP.Net required components of IIS, its is common in Windows 8
family
Resolution: Install them from add windows features