Dimitrios Samorgiannidis

  1. Which Receiver Should I Use For Windows Smartcard Authentication

    Updated: 2012-12-22 Which Receiver Should I Use For Windows Smartcard Authentication? Well, the answer that we all hate but which is probably the most correct one is that it depends, however if you are not satisfied with that answer please continue reading as I would like to explain a few things that can make a difference to your current choice. I should probably also state that information ...

    Read More

  2. How to configure a Windows 7 end-point for Smartcard pass-through

    Updated: 2013-07-12 There have always been rumours (if you didn’t know) that PIN pass-through was not possible when using a Vista/Windows 7 operating system rather than Windows XP. The difference is more thoroughly explained in the provided Citrix article (reference section), hence I am not going to deep dive into this part. But what I want to highlight is that it is actually possible to get ...

    Read More

  3. Smartcard logon issue caused by USIM reader

    Created: 2012-11-04 Updated: 2012-11-06 Background: During one of my engagement we encountered some strange behavior in the smart card logon cycle. Basically when launching an application hosted on a XenApp (4.0/4.5/6.0/6.5) server from a Dell Latitude E6320 with a build in USIM reader, you will get a driver error notification. The message itself mainly causes functional issues on Windows 2003 servers, but is visible on all operating systems. In ...

    Read More

  4. PVS and the forgotten antivirus exclusions

    Created: 2012-11-04 Last Updated: 2013-09-22 WARNING! This article contains antivirus exclusions. It is important to understand that antivirus exclusions and optimizations increase the attack surface of a system and might expose computers to a variety of real security threats. However, the following guidelines typically represent the best tradeoff between security and performance. Citrix does not recommend implementing any of these exclusions or optimizations until rigorous testing has ...

    Read More

  5. Integrating smartcards with Citrix Products?

    Last Update: 2012-12-19 I tend to find myself deeply involved with these types of setups time over time, and I have realised that a lot of important information is completely undocumented, briefly documented, or just unknown to the majority of our customers and partners. So I have finally decided to create a blog series about smartcards and the challenges around it. As I keep learning new things ...

    Read More

  6. Troubleshooting Smart Card SSO with Access Gateway Enterprise Edition – Part 2

    Minor updates: 13th o June, 2013, 01.19 CET This post is the second part of a series of two. So it took some time to write this second blog post, and the reason is that I basically wanted to get a second chance to try my settings on a similar environment, as the one I first encountered. And thanks to a Swiss and a Swedish customer/partner I ...

    Read More

  7. PVS – The MTU Story

    Updated: 2013-09-22 If you are working with Citrix Provisioning services you might have seen a small difference in the MTU size value from previous releases of the product? If not, it is time you take a look in the GUI. The older version of the product (5.1), had a MTU size of 1464 bytes set in the GUI, compared to the newer  releases (5.6/6.0/6.1) of the product, ...

    Read More

  8. The Dream of the Golden Design

    While doing my Desktop Transformation projects, I am often asked the same questions over and over again. Questions like: What would be the best design according to you? How would you do this, if you got free hands? If time and money didn’t matter, what would you do? What would be the best approach? And you know what; the answer is plain and simple. I can design a large XenDesktop FlexCast ...

    Read More

  9. Troubleshooting Smart Card SSO with Access Gateway Enterprise Edition – Part 1

    Updated: 2012/10/12 My second blog post is mainly about something more challenging than optimising your servers, and anyone who has tried to configure Smartcard SSO with AGEE, knows what I am talking about, right? Background: The root cause behind this blog post is basically due to an engagement I did just after the Knowledge Exchange session in Dublin 2011 and before my vacation was suppose to start. Time was ...

    Read More

  10. Optimise your servers for maximum performance (Part1)

    Are you running XenApp on XenServer, VDA's on XenServer or why not a couple of physical Citrix Provisioning services or any other application or hypervisor? If this happens to be a "Green IT" optimised server, I wouldn't be surprised, I would actually state that this is very common. But did you also know that you might not get the expected performance? For example, HP servers are configured by default to provide ...

    Read More