Citrix Systems Citrix MetaFrame Application for Windows 1.8 - Manual (Page 89)

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To the ICA Client user, a published application is an application that appears very
similar to an application running locally on the client device. The way the user
starts the application depends upon the ICA Client in use on the client device.
Program
Neighborhood
users After starting Program Neighborhood, these users find a list of
applications published for their user account or user group.
ICA UNIX,
Macintosh, and
DOS Client users Using connection managers, these ICA Client users can browse a
list of all applications published on the network and select an
application to run.
ICA Web Client
users These users can click a link in a Web page.
Published Application Manager supports four types of published applications.
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You can publish any application that can run on the Windows NT console (32-bit
Windows applications, 16-bit Windows applications, DOS applications, POSIX
applications, and OS/2 applications).
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In order to publish Citrix IMS applications, you must install Citrix Installation
Management Services on your network. Citrix Installation Management Services
performs remote unattended installation of applications on Citrix servers. Using
IMS, you can simultaneously install an out-of-the-box application on all Citrix
servers on your network from a single point without manual intervention. You can
install applications on servers regardless of their physical locations, network
connection type, or individual hardware setup.
Citrix IMS uses Published Application Manager to push application installations
to your Citrix servers and also to uninstall those applications if necessary:
publishing a Citrix IMS application causes each server configured to run the
application to download and install the application while deleting a published IMS
application causes each server configured to run the application to uninstall the
application.
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Published Application Manager supports publishing of an application on multiple
servers if Citrix Load Balancing Services is installed on those servers.
When an ICA Client user connects to a published application configured to run on
multiple servers, load balancing determines which server will run the application
based on server load. The ICA Client contacts the master ICA Browser, which
maintains a list of servers configured to run the published application, to find the
address of a server containing the published application.