Citrix Studio access during an outage

When you have a Citrix Virtual Apps and Desktop site with multiple zones, all zones are not created equally and this can affect Citrix Studio access during an outage. Citrix Virtual Apps and Desktops uses a concept of Primary and satellite zones. When a failure occurs within the Primary zone meaning that either all the delivery controllers are down or disconnected from the SQL databases Citrix Studio becomes unavailable. While restoring the primary zone controllers to a working state should be the main concentration point the environment may have been designed to be highly available so the satellite sites can continue to run and potentially require business as usual type access. Luckily there is a simple powershell command that you can run on one of the surviving satellite zone contRead More…

SSLLabs SSL test script to check multiple URI’s with PowerShell

SSL Labs Server test is a great tool for ensuring that your Citrix ADC Gateways are secured. By entering a URL into SSL Server Test (Powered by Qualys SSL Labs) and waiting gives you a indication if your VIP is exposed to known vulnerabilities and presents this as a graded score (F to A+). Getting an A+ is the target however running the test manually only gives you the result for the time of the test. If you have multiple administrators who have access to your ADC’s or potentially the security goalposts move this may result in your ADC’s becoming vulnerable again which you would only discover by running the SSL test again. Luckily for us SSL labs have created an API that we can use to perform tests and obtain some detail around the current score. Armed with my rudimentary PowRead More…