In the last years I’ve seen several terminal services environments – some of them were planned very well and others had a few design-mistakes, that produced a lot of work for the administrator or badly affect the overall system performance. But if you think about the following points, you may succeed with implementing your new farm 
Posts Tagged ‘application delivery’
Planning terminal services with XenApp
November 30th, 2009
calculations on VDIs…
August 15th, 2009[For the german/original version - please click here.]
As a fan of saving energy in IT infrastructures, I have calculated how much energy one can save via implementing a VDI. Below is a detailed VDI solution used as an example to prove exactly how much energy can be saved. In order to better explain this, I will assume the following:
- the system-integrator configures an automatic shutdown for the hypervizor overnight
- no shared storage is used to store VMs because you don’t need high availability functions for all desktops
- the workloads we have to virtualize are average office users using a software that does not run on terminal servers but we can serve 4 desktops with one CPU-Core
SmartAccess in real world scenarios…
July 14th, 2009[For the german/original version - please click here.]
Because many of our customers do not really know what SmartAccess could do for them, i’ll describe some real world use-cases here:
Citrix SmartAccess needs the following components to work:
- Citrix Access Gateway Advanced or Enterprise Edition
- Citrix Webinterface 5.x
- Citrix XenApp 4.x or higher
And it can do the following functions for you:
- constrain published applications by result of endpoint analysis
- switch off ica-features (for example file-transfer, printing or clipboard) by result of endpoint analysis
- secure ssl-vpn access by result of endpoint analysis
These functions allow you to implement a secure and flexible access to your network. So the mobile users will win flexibility + productivity without compromising the security of your network. In the following figure you can see an example use-case with CAG as ica-proxy and endpoint analysis.
In this scenario the state of the antivirus client and the state of the windows firewall is checked. Citrix is delivering some so called expressions for some av-clients and a few personal firewalls but mostly you have to configure these expressions to your own needs. Therefor you can use timestamps of files, the state of services and processes and network-parameter like mac-
addresses.
The second scenario uses the same expressions but decides between ica-proxy and the more powerful ssl-vpn access.
Therefor the result of the enpoint analysis is only beeing interpreted at the CAG itself – It’s not interpreted at the XenApp-Server, like it is done in the scenario before. So the CAG itself just decides wether the user can use ica-proxy only or a more powerful ssl-vpn-connection.
The combination of the two scenarios could lead to the following scenario:
Furthermore you can use SmartAccess in combination with XenDesktop as well.
If you interested in SmartAccess now – Don’t hesitate to contact us!
