v2r1ica

v2r1ica
ICA Client Support
Network Station Education
IBM NCD
June 1999
v2r1ica.prz 01/31/00
Copyright IBM Corp. 1998 -©
Course
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1
Objectives/Summary
What is ICA?
Where is ICA used?
What are the ICA Features?
How do I start an ICA session?
How to configure ICA?
Using the ICA Remote Application Manager
Using the Windows-based application definition
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Notes
This presentation discusses the ICA Client Support of the IBM Network Station.
The objective is to present a brief overview of what the ICA protocol consists of, where it is
used, and what its features are.
Also to understand the two ways of configuring ICA sessions and how to start them.
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What is ICA?
ICA
Display protocol
Session User1
Session User1
Multi-user core
Session User2
Screen updates,
keystrokes and
mouse clicks, audio
Session User2
Applications
Windows NT multi-user server
Thin clients
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Notes
The Independent Computing Architecture (ICA) protocol is a general-purpose presentation
services protocol developed by Citrix Systems. It allows an application’s user interface to
execute with minimal resource consumption on a client machine, while application logic
executes on a Winframe or MetaFrame multi-user Microsoft Windows NT application
server.
The ICA protocol has been specially designed for transmitting Windows graphical display
data, and keyboard and mouse input over a network connection and it offers a high degree
of data compression to allow the client to communicate with the server even over
bandwidth-limited WAN links.
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Network Computer Division 5
Where is ICA used?
Thin Clients
Wincenter Pro
for Metaframe
X
1
1
X-based terminals
DOS-based desktops
Unix-based desktops
Macintosh
Network Computer
Metaframe
Multi-user
core
I
C
A
R
D
P
Unix-based desktops
Network Computer
Windows-based
desktops and
terminals
Windows-based
desktops and
terminals
NT Terminal Server Edition
Windows NT Server 4.0 based
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Notes
There are three types of protocols that can be used to connect into a Windows Terminal
Server Edition system:
The RDP protocol is the base protocol supported natively by the WTSE system and it is
typically used by Windows terminals
The ICA protocol, supplied as part of MetaFrame, can be used by a variety of clients
including any Windows-based workstations and the Network Station
The X11 protocol used by X terminals (including the Network Station)
Up to now, the ICA protocol has been the most popular because it supports more functions
that the other protocols.
The IBM Network Station supports an ICA client that allows it to connect into any type of
MetaFrame server.
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V1R3 ICA
V1R3 ICA Client
Connects to all multi-user versions of Windows NT
Many ICA features
QuickOn for running Windows
Model 300 flash based solution
Flash card ordered through Network Station partners
Simple configuration on the client
Power it on and it connects directly to the Windows NT server
Requires no boot server or special configuration
Citrix Device Services
Provides basic ICA capabilities - at no additional cost
IBM provided media (CD, internal Web download)
Installs on Windows NT Terminal Server Edition
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Notes
In V1R3, the Network Station did support the ICA client, initially with a restricted number of
features, but more features were added with different levels of the service packs that were
made available over time.
There was also a product called Quickon for Windows, which was a flash card specifically
designed to work on the Series 300 which contained all that was necessary to boot the
Network Station and connect it to a WinFrame or MetaFrame server.
Cirtix Devices Services was also made available as a version of MetaFrame that provided
basic ICA connectivity without some of the more advanced features such as load
balancing and shadowing.
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V2R1 ICA Features
Remote Application Manager
Similar in function to the 'ICA Chooser'
System administrator configures connection entries
Users may (optionally) configure connection entries
Presents a list of servers to choose from
Audio
Now provide the Windows audio experience (wav, midi, etc.)
One way audio mapping with audio compression
Not synchronized with video for now
Secure ICA
Supports Citrix's Secure ICA option pack
End-to-end RSA RC5 encryption for the ICA data Stream (40 bit and 128 bit key sizes)
Provides secure medium for running Windows applications
Protocol Compression
Provides better response times over WAN connections
NSM configuration enhanced
Easier ICA configuration for System Administrators - client configuration integrated into NSM
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Notes
In V2R1, the ICA client has been enhanced with many additional features.
A Remote Application Manager, which is similar in function to the 'ICA Chooser' that
presents a list of servers to choose from, is now available on the desktop by default. The
system administrator can configure connection entries and users may also configure
connection entries, if that was enabled.
The ICA client now provide the Windows audio experience (wav, midi, etc.) and one way
audio mapping with audio compression
Secure ICA is available to provide a secure medium for running Windows applications . It
supports Citrix's Secure ICA option pack and end-to-end RSA RC5 encryption for the ICA
data Stream
Protocol Compression provides better response times over WAN connections
The NSM configuration has been enhanced to make it easier for System Administrators to
configure client connections.
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Other ICA Features
Virtual Print
Lets a Windows application communicate with the printer on the Network Station
via the ICA session
Provides an additional way of using the local printer (instead of using the normal
Network Station's LPR/LPD support)
Virtual Communication
Lets a Windows application communicate with the serial port on the Network
Station via the ICA session
Limited to devices that IBM and NCI have tested
Load Balancing
Ability to connect to the least utilized server in an ICA server farm
Cut and paste support
Available between the ICA Window and native non-Java applications (3270, 5250,
browser, X sessions)
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Notes
These are other features of the ICA client that were available in the previous release
Virtual Print lets a Windows application communicate with the printer on the Network
Station via the ICA session and therefore provides an additional way of using the local
printer (instead of using the normal Network Station's LPR/LPD support)
Virtual Communication lets a Windows application communicate with the serial port on the
Network Station via the ICA session
Load Balancing is the ability to connect to the least utilized server in an ICA server farm
Cut and paste support is available between the ICA Window and native non-Java
applications (3270, 5250, browser, X sessions)
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Network Computer Division13
Starting the Remote Application Manager
Remote
Application
Manager
Window
Windows
Desktop
Window
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Notes
There are two ways to configure ICA sessions:
Make entries in the Remote Application Manager so that the user, from the desktop, starts
the application manager and selects a particular session from the list that is presented to
him. The ICA Remote Application Manager is started from an icon inside the Host Access
folder (this is the default location but it can be changed).
Note that entries can be configured in this list either by the administrator, or the user may
be allowed (if so configured) to make his own entries in the list
Or the administrator can create individual sessions and place them on the launchbar as
individual icons or as icons within a folder. In other words, these are individual sessions
that are not part of the list in the Remote Application Manager (although they can be also).
When the user selects and entry on the Remote Applications Manager or an ICA session
icon on the launchbar, the session is established with a MetaFrame server and the
Windows desktop is displayed on the Network Station monitor, as shown on this chart.
The Windows desktop can be windowed or it can be full screen, dependent on how the
specific session was configured.
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Configuring ICA Remote Application Manager on the LaunchBar
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Notes
Let us discuss the ICA Remote Application Manager first.
The first task is to make the RAM available on the desktop. This is done by choosing the
Desktop/Launchbar Setup task, selecting ICA Remote Application Manager, which is
already, by default, present in the launchbar, as the fourth entry in the Host Access folder.
A click on Edit displays the panel in the top right hand corner on this chart.
Notice that the default name is ICA Remote Application Manager but that can be changed.
We used ICA test here for example. Notice also the red arrow pointing to the Private user
updates allowed checkbox. This indicates that the user is allowed to make his own entries
in the application manager, in addition to those that the administrator can define.
It does not mean however that the user is allowed to change the entries made by the
administrator.
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ICA Configuration in NSM
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Notes
Once the ICA Remote Application Manager has been configured to appear as an icon on
the launchbar or in a folder, the next step is to make entries in the application manager.
This is done by using the ICA Remote Application Manager Task under the Applications
category of tasks, as shown in this chart. This brings up the panel illustrated here where
two entries have been defined, called ITSOWTS and ITSOWTS2.
A click on Edit shows us the actual panel in which these entries were made by originally
using the Add button.
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ICA Connection Entry
Manual
Automatic
Network Station
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Notes
This is the panel into which the actual connection entries are made in order for the entry to
appear in the ICA Remote Application Manager.
These are the typical entries for an ICA connection that you have seen before.
Notice in particular that you can specify a Logon type.
Manual means to wait for the normal Windows logon panel to appear and the user then
enters a user name, domain name and password.
Automatic means to supply these parameters automatically during the connection by using
the parameters entered in this panel
Network Station means to use the sane user name and password that was used to log on
to the Network Station, thereby avoiding the user to enter his name and password twice.
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Displaying a Connection's Properties
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Notes
Once these connections are defined and appear in the ICA Remote Application manager,
selecting an entry and clicking on the Properties icon displays the panel shown here,
where the properties can be examined.
If one chooses Entry from the pull down menu, and then New, the same panel appears but
as an empty panel where new values can be entered. This is possible only if the Allow
private user updates checkbox has been checked in the ICA Remote Application manager
configuration.
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ICA Connections - Other Properties
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Notes
These three panels illustrates the other properties that can be specified for each ICA
connection in the Remote Application manager, such as window sizes and colors etc.
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Launch Bar Settings
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Notes
We said earlier that there were two methods of defining ICA connections.
ICA connections can also be defined directly as icons on the launchbar or in folders on the
launchbar.
This is done by using the desktop/launchbar set up task, selecting Windows-based
application, and clicking on Add to include this item on the launchbar, and bring up the
panel in the next chart.
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Network Computer Division27
Windows-Based Application Panel
ICA
X11
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Notes
Notice that this panel is nearly identical to the one we showed earlier when creating entries
in the ICA Remote Application Manager.
The only difference is that we have a choice that was not on the other panel, which is a
connection type choice where we can choose either ICA or X11.
All other fields are the same.
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Where to Go for More Information
Main Web Site
www.ibm.com/nc
Current Network Station Redbook
SG24-5844 Network Station Manager V2R1 Guide
Previous Network Station Redbooks
SG24-5187 AS/400 - Techniques for Deployment in a WAN
SG24-5221 Windows NT - NSM Release 3
SG24-5212 Printing
SG24-2127 Windows NT/WinCenter
SG24-4954 S/390, SG24-2016 RS/6000, SG24-2153 AS/400
Product Publications
SC41-0684 Installing NSM for AS/400
SC41-0685 Installing NSM for RS/6000
SC41-0688 Installing NSM for Windows NT
SC41-0690 Using NSM
IBM Network Station Advanced Information (On the Web Site)
Citrix Web site (http://www.citrix.com)
NCD Web Site (htp://www.ncd.com)
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Notes
Amongst all these publications, the SG24-5844 in particular has a complete chapter on
ICA.
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Network Computer Division31
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