NComputing makes sure NoTouch has latest versions of Citrix Workspace App (formerly Citrix Receiver) integrated. Our Citrix Workspace App implementation supports both ICA and HDX, as well as Flash, multimedia and USB redirection, making a perfect Citrix endpoint solution, without any need for installing software, cryptic configuration files or command line options! NoTouch provides a complete configuration environment for Citrix Workspace App, so it is not necessary to directly work with Citrix' own configuration windows - everything can be configured and managed via the local NoTouch configuration menu as well as centrally with NoTouch Center. The Citrix Workspace Hub also uses Citrix Workspace App.
This article gives an overview of the different configuration scenarios and later describes Citrix product-specific configuration steps. We assume that you basically understand how NoTouch OS is configured and especially how server connections are created and configured. The Citrix Workspace App for Linux differs in many aspects from the Windows-based Receiver, not only in terms of look&feel, but also in terms of available features and even bugs.
The new Citrix Workspace app (formerly known as Citrix Receiver) provides a great user experience - a secure, contextual, and unified workspace - on any device. It gives you instant access to all. Configure a Citrix Receiver for mobile devices (iPhone, iPad, and Android) to access published resources in a secure XenApp server farm. In the Citrix Receiver settings, add an account by entering: Description. Configure the gateway settings and save. (See the documentation.) Launch the connection. The new Citrix Workspace app (formerly known as Citrix Receiver) provides a great user experience - a secure, contextual, and unified workspace - on any device. It gives you instant access to all. . NCH will not supply mobile devices for the sole purpose of accessing Epic. However, you may access Epic from your personal mobile device. Any mobile device that supports the Citrix Receiver application will be able to connect to Epic. These mobile devices may include the iPad, iPhone, Android, Blackberry, and Windows Mobile OS.
The following options are available how to configure the system:
If you want to log in via browser, create a connection, use either Firefox or Chromium, and point it to your Citrix URL. You will notice that you have the 'Citrix Workspace App'
On most modern PCs a browser is a good choice, and NoTouch cleans out the environment after the browser is closed. On older systems or the Raspberry Pi you may find a browser solely for the purpose of logging in uses too many resources, though.
In most cases a connection of type Citrix Workspace App and a Citrix URL as connection target are enough to successfully run a Citrix client.
'Citrix Workspace App', the mode of choice for using NoTouch with both on-premise and cloud-based Citrix deployments, including Citrix Workspace. It can be used to either run one resource (absolutely seamless to the end user) or show a menu where users can choose from - at your option!
If you want to connect to sites using the older PNA protocol or any earlier Citrix products, please visit Legacy Citrix configuration.
Note: Before version 2.40.4680 (i.e. end of 2018), the Citrix Workspace App connection mode was called Citrix/StoreFront
Setting up a connection to Citrix is really easy. Follow these simple steps:
Connection Mode
parameter to 'Citrix Workspace App' (older versions call this 'Citrix/StoreFront')Connection Target
parameter Citrix URL
parameter of the Citrix options instead of Connection Target
- both parameters work equally wellNoTouch will display a chooser if more than one published resources are available (otherwise, if it is only one, it will launch that without further questioning). If you want to go directly into one resource, please read below.
Note: The Citrix Workspace App will display a choice between different stores. That is especially common if going through a NetScaler that bundles multiple stores. To avoid that, you must set up your URLs that it goes to one store. It is really all depending on the URL and the server configuration.
If you want to start a specific resource instead of showing a chooser:
Launch Resource
parameter of the Citrix options, orBy default NoTouch will close the StoreFront connection immediately after the actual published application or desktop is closed. This is expected in 99% of all use cases - you don't want your users to log off from a Windows desktop, walk away from the workstation but leave the StoreFront chooser open for anybody else..
However, if your use case is different, you can modify the StoreFront stay logged in
parameter in the Citrix options. It is 0 by default (=immediate termination), any number of seconds is ok. Thus, if you type in 120, you would give your users two minutes (120 seconds) time to choose another connection out of the chooser window.
Selfservice is part of Citrix Workspace App. Any connection of type 'Citrix/StoreFront' can be simply switched to use selfservice, simply look for the 'Use selfservice GUI parameter' and switch it on.
The Desktop Viewer Toolbar is an overlay menu that allows to quickly end or modify a Citrix session. You can switch it off. Usually system administrators like it, but end users not so much.
The Raspberry Pi can display the Desktop Viewer Toolbar only when NOT in H.264 mode. That means, if you want it on the Raspberry Pi, you have to both disable H.264 and enable the Desktop Viewer Toolbar.
Connection modes Citrix/One application or desktop and Citrix/Program Neighborhood as well as connecting to Citrix via browser means that the actual session specification will be created on the server. This includes for example the window size. It is not possible to modify such settings from the client side - you must do it in the Citrix management console, e.g. setting the 'window size' to Fullscreen.
The Citrix Receiver will take advantage of multiple monitors automatically and it will report screen geometry to the server. Please make sure Multimonitor support works, more information can be found here: Multimonitor operation with NoTouch
Two parameters influence the dualmonitor/multimonitor behavior - the effects of these parameters are entirely up to Citrix and may change with different versions of the Citrix client:
Most people will be fine with default settings, both in single- and in dual-monitor setups.
To operate Citrix Receiver properly with HTTPS connections, it must trust your StoreFront site's CA root certificate. In case you have publicly available Citrix URL you will most likely have used a well-known certification authority (CA) whose certificates are already in the system's trusted certificate store. On private, internal sites however you might use a self-signed certificate or one signed by your (private) Microsoft Active Directory Certification Service. In these latter cases, you must make the certification authority's (CA) root certificate available to NoTouch via the mechanisms defined in documentation on certificates.
The Citrix Receiver for Linux does not have any switch to simply ignore the certificate check. That means you can not just turn the checks off. This is a Citrix policy (or 'limitation', depending on your point of view).
For more information please see the article on Certificates. Office apps for mac os.
By default, USB forwarding is switched to on and USB devices will be forwarded to the server automatically. So called HIDs (human interface devices, such as keyboards, mice, but also mouse-emulating devices like digital dictation foot pedals) will not be forwarded, but rather handled locally and brought to the VDI desktop as keystrokes and mouse movements.
There are two parameters, both need to be enabled for USB forwarding to work (yes, the default is that both are on):
The Citrix USB forwarder is a system service, thus it can be configured from the 'Services' parameters, not the Citrix ICA connection parameters. The startup behavior is controlled by the parameter named 'Citrix USB forwarder' parameter. It has these options:
Futhermore, you can allow or deny specific devices by using the 'Allow devices' and 'Deny devices' parameters in the 'Services'/'Citrix USB' parameters. These parameters directly modify Citrix' usb.conf file and thus accept the original Citrix syntax only [1]. Multiple stanzas, each one describing one device, stanzas separated by commas, can be added to either of these parameters. A stanza consists of tags that in turn have the form TAG=VALUE. Acceptable tags are:
Valid examples for either of the two parameters are:
The Information page of the local configuration application will present information about USB devices to you - this is the place how you can find out the VID or PID, for instance. Command line afficionados will prefer the lsusb command, preferably in lsusb -v form.
Please see the original Citrix documentation for more information [2]. Changes to these parameters need a reboot to become active.
Browser Content Redirection (BCR) is a Citrix feature to use the local, client CPU to render certain webpages instead of the VDA side. In other words, instead of the VDA side rendering the whole page, a Workspace-App-side rendering engine will be started and instructed to fetch the web content from the URL, render it locally and draw it into the browser window 'over' the rest of the Citrix session.
On the NoTouch side, BCR needs to be switched on with the 'Browser Content Redirection' parameter under the Citrix options - set it to 'on'. On the Citrix side, you'll have to deal with
More information can be found here: Browser Content Redirection and Troubleshoot Browser Content Redirection.
Needless to say, all required components for BCR are part of NComputing NoTouch OS. You do not need to worry about installing GStreamer, WebKitGtk+, CEF etc.
To use BCR with multimedia content on the EX400 (x64) thin client, you will need the Fluendo codec pack. As of WSA 19.06, Citrix can not simply work with 'only free codecs'. See below for a more detailed explanation on the codec question.
A codec in this context is a program to playback a certain kind of video or audio stream. NComputing NoTouch OS only includes codecs that are free from any patent license fees. We understand many people don't care but we do. If you download any kind of desktop Linux and then additionally install these patented codecs such as AAC or H.264, you are at risk of being sued, at least in a commercial environment. That said, please don't report bugs to NComputing that sound like 'It works on Ubuntu, I just installed all these codecs..'. The proper way is to purchase the Fluendo codecs, which are high-performing and properly licensed codecs on Linux. This codec is relatively inexpensive and gives you legal safety as well as the highest performance. Note: This only applies to software. If your system has hardware decoders and the drivers can make use of them, the royalties are already being paid for by the HW manufacturer.
Typical free codecs are VP8, VP9, AV1, Theora (video), and Opus, FLAC, MP3 (audio). Yes, MP3 is now patent-free since the last patent expired in mid-2017. Typical codecs that require licensing are AAC (audio), MPEG-2, H.264, and HEVC/H.265, again, unless your hardware has such codecs built-in.
Browser Content Redirection on the Raspberry Pi 3 does work in principle but is unsupported by NComputing as there are a few caveats. The Pi implementation, as of mid-2019, uses CEF (Chrome Extension Framework) as opposed to WebkitGtk+ which is actually the more modern approach. However,
The software is still very early and may not work in all circumstances (please direct support questions to Citrix)It does not work conceptually with a full-screen H.264 encoded session, obviouslyIt will degrade performance because the Pi 3's CPU is not made for rendering complete web pagesThe Raspberry Pi 4 with its improved CPU power changes the game - As the Raspberry Pi 4 emerges, both Citrix and NComputing are working together on next-generation BCR capabilities.
From within the 'HDX/Multimedia' parameter section (a subsection of Citrix 'ICA' parameters), several aspects of multimedia support of the ICA/HDX protocol can be configured.
Flash redirection is enabled by default. Please note that the list of software requirements on the server side is long and the list of supported software modules such as browsers is very short. You may have to adapt your VDI environment to meet Citrix requirements.
Notes:
While for some time Citrix has required Flash version numbers to match on client and server, this is not required any more. In fact, the opposite is now true - Citrix suggests to disable the Flash version number check, as stated below and here: http://support.citrix.com/article/CTX134786
You should disable the Flash version check by adding/modifying Windows Registry Key on VDA, named “FlashPlayerVersionComparisonMask” which is a dword that should be set to zero.
This will need to set on each VDA:
After making these modifications you need to restart IE on VDA.
HDX RealTime Webcam Video Compression needs audio input to be enabled both on client and server to work. NoTouch typically has audio input ('microphone in') disabled by default, so you have to turn this on. Besides that, no extra switch is necessary to enable HDX RealTime Webcam Video Compression, but there's still an extra switch to force the redirection, 'HDX RealTime webcam video compression'.
The Citrix HDX RealTime Media Engine (RTME) is the client-side component of the Citrix HDX RealTime Optimization Pack for Skype for Business. To enable Skype for Business experience, both client side and server side need to be properly configured.On the client side, both RX-HDX and EX400 thin clients come with RTME integration. By default, the HDX RealTime Media Engine is disabled and must be enabled for the Citrix connection to optimize the Skype for Business experience. This can be done in Connection -> Citrix -> HDX/Multimedia settings by setting the “HDX Realtime Media Engine (Skype for Business)” parameter to “on” (see screenshot below).
On the server side, the Citrix HDX RealTime Connector also needs to be installed (see screenshot below). The RealTime Connector starts when Skype for Business front-end application is launched and communicates with the HDX RealTime Media Engine in the end-user device.
Citrix HDX RealTime Media Engine and Citrix HDX RealTime Connector should ideally have matching versions. With all the prerequisites in place, the Connector and Media Engine should connect together and exchange some information (see screenshot below).
Please be sure to check the supported Skype for Business versions in this article to ensure compatibility with the HDX RealTime Optimization Pack:
https://docs.citrix.com/en-us/hdx-optimization/2-4-ltsr/system-requirements.html
Once the HDX RealTime Optimization Pack is setup, the audio and video devices connected to the thin client are enumerated locally by RTME (i.e. not redirected from the client to the VDA). The Audio and video settings can be modified directly from Skype for Business setting menu.
HDX 3D Pro GPU/H.264 acceleration is enabled by default. Switch it off by setting the 'HDX 3D Pro GPU/H.264 acceleration' parameter to off.
If there are any issues regarding the session's resolution while HDX 3D Pro is active, please have a look at the follwoing article:
NoTouch includes GStreamer, as required by Citrix Receiver to support Mediastream Windows Media Redirection [4].
Printing works fine with Citrix in NoTouch. Please consult our Printer configuration page.
Citrix can forward smartcard readers and use these for login purposes. U.S. Federal customers will enjoy the CAC card support. In that case, do not forward the smartcard reader with generic USB forwarding. Configure smartcard support according to these instructions:
Note: For XenDesktop, do not attempt to use the generic USB forwarding mechanism to forward the smartcard reader (it won't be default, you would have to play with the settings). The downside is that then you can't use the reader for login purpose. It would work to forward a reader into the session only (ie without login) if that is what you want.
Beginner bartender drinks. NoTouch comes with reasonable default values and should accomodate all Citrix options that are used by 99% of the people. However sometimes even deeper configuration accesses are necessary. NoTouch comes with an easy-to-use method of modifying Citrix INI files: Citrix Receiver configuration files
Furthermore, you can totally rewrite the files that are used to generate the Citrix configuration, which would work by the template mechanism.
Most NoTouch images have at least two Citrix Receiver versions included. Yes, you read that correctly, two different versions of the Citrix product, so you can select the one that fits your use case better. By default, the newer client will be used. At the time of writing, this is the 13.4 Receiver for Linux and the alternative, older Receiver is 12.1.
To switch to an alternative version of the Citrix Receiver, use the 'Client version (if present)' parameter in the Citrix options. You may have to scroll down a bit to find it, it is pretty far down below.
The Citrix Receiver can connect via a proxy server. While these parameter may seem obvious, it is important to note that from OS 2.40.1310 on the Citrix Receiver will inherit the Firefox proxy settings of the same connection, if you switch the 'Use Firefox proxy settings' parameter to on. This will inherit exactly your NoTouch settings that you made in the 'Firefox' parameters.
Certainly you can configure the proxy settings directly and even specify to inherit from the system-level proxy settings. Here are the parameters in more detail:
Citrix has a lot of options, some combinations may have strange effects. Most people are fine with the defaults, in fact, NComputing recommends to change something only when a) necessary and b) advised to do so. Stratodesk can not provide support for Citrix installation, be sure to have a Citrix professional at hand when troubleshooting.
More detailed information can be found in Citrix Receiver for Linux 13.4 eDocs - you can skip the part about installation and integration since this is already done in NoTouch.
Also please check out the Citrix Receiver Feature Matrix.
In case something does not work as expected, always open a Citrix support case before contacting NComputing.