Tiny Deathstars of Foulness

There are times in a Citrix environment where you might have servers pointing to different data stores. You then might get confused about what box is pointing to what datastore location. To find out, open Powershell on the Citrix server and run the following command:

cat "c:\program files\citrix\independent mananagement architecture\nf20.dsn"


April 24th, 2014

Posted In: Windows Server

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At some point in your Citrix experience, you may decide that you need to uninstall and reinstall Xen App or Presentation Server. If and when this happens you will likely need to force the uninstall. Luckily, the mps.msi comes with an operator to CTX_MF_FORCE_SUBSYSTEM_UNINSTALL which can be set to use, rather than hunting through the registry and manually removing entries there. You run the msi through msiexec, as follows:

msiexec /x mps.msi /L*v c:\ctxuninstall.log CTX_MF_FORCE_SUBSYSTEM_UNINSTALL=Yes

Once uninstalled, you can install anew.


April 22nd, 2014

Posted In: Windows Server

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When deploying XenApp, there are a few ports that typically need to be open for the solution to work properly. The most common of these are 1603 and 1604, but you may also need to open 1494 and 2598 as well. And of course, 443 and 80 if you’re doing web stuff. So here’s the list and what they do:

  • Admin: 135
  • Access Gateway Deployment: 443
  • App Streaming: 445
  • Citrix ICA thin client protocol: 1494
  • Citrix ICAbrowser: 1604
  • Independent Management Architecture: 2512
  • Management Console: 2513
  • Citrix Session Reliability Service: 2598

Citrix_SSLVPN_COIL_NetDiagThere are also a number of ports that communicate back into your infrastructure, such as LDAP (can be a RODC), RADIUS and DNS. If you’re blocking internal ports (e.g. if your Citrix infrastructure is in a DMZ) then you’ll also need ports 9001, 9002 and 9005 in order to administer your Citrix environment, but only from hosts that will perform administration tasks. Also, if you use AppController, port 9736 between hosts provides the High Availability service, 4443 is for the admin tool and 3820 and 21 are used for log transfers. If you have a separate license server you’ll need the Citrix servers to communicate with it via 27000, 7279, 8082 and 80. If you use a separate SQL Server for any of this stuff, you’ll also need 1433 and 1434 to it.

April 21st, 2014

Posted In: Windows Server

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I originally posted this at

It seems like everyone wants to dabble in the Open Source market these days. First came the RedHat, VA Linux and other public companies using Open Source technologies to ramp up. Then IT giants such as Novell, Sun and Apple started to come to markets with products faster due to their newfound Open Source roots. Now a lot of other companies are jumping on the bandwagon and introducing products based on Open Source technologies or purchasing other companies to help them do so quickly.

Citrix has purchased XenSource, a company that provided virtualization products based on the Xen Open Source virtualization platform. XenSource is now a prodcut of Citrix that is meant to compete directly with VMWare on the virtualization scene. Why use something like XenSource instead of just building a virtual cluster based on the actual Open Source Xen packages? Citrix offers annual support plans for Standard Edition, which allows customers to receive support. In addition, Citrix is providing free web-based resources, including online product documentation, a knowledge base, and discussion forums, as is done with their popular Metaframe products. And of course, XenSource becomes the preferred platform to run Citrix clusters on. Not that VMWare won’t do a fine job, but support will be a lot easier if you’re using XenSource.

November 3rd, 2007

Posted In: Business

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