Citrix Systems Network Router NETSCALER 9.3 User Manual

Page of 195
How Web Interface Works
The following figure illustrates a basic Web interface session.
Figure 6-1. 
 A Basic Web Interface Session
Following is a typical set of interactions among a user device, a NetScaler running the
Web interface, and a server farm.
1. A user authenticates to the Web interface through a Web browser or by using the
XenApp plug-in.
2. The Web interface reads the user's credentials and forwards the information to the
Citrix XML Service running on servers in the server farm.
3. The Citrix XML Service on the designated server retrieves from the servers a list of
resources that the user can access. These resources constitute the user's resource
set and are retrieved from the Independent Management Architecture (IMA) system.
4. The Citrix XML Service then returns the user's resource set to the Web interface
running on the NetScaler.
5. The user clicks an icon that represents a resource on the HTML page.
6. The Web interface queries the Citrix XML Service for the least busy server.
7. The Citrix XML Service returns the address of this server to the Web interface.
8. The Web interface sends the connection information to the Web browser.
9. The Web browser initiates a session with the server.
Prerequisites
The following prerequisites are required before you begin installing and configuring the
Web interface.
w
XenApp or XenDesktop farms are set up and running in your environment. For more
information about XenApp, see the XenApp documentation at 
Chapter 6
Web Interface
150