Articles by 'Brian Wagner'

Blog Author - Brian Wagner

Brian has over ten years’ experience in the planning, design, and implementation of technology solutions. He supervises technical specialists at projects, and has spoken at many technical seminars. Brian is an application integration specialist with experience configuring over 1,000 applications to work in multi-user environments, and manages Gotham’s thin client and server consolidation practices.

By Brian Wagner, Posted in Infrastructure, Virtualization

Overview Citrix acquired Unidesk in early 2017, and quickly integrated the App Layering technology into the stack. This included the ability to separate and individually manage layers for the OS, Platform Tools, and Applications. Applications can be baked in to the final image (template) or mounted elastically on demand based on user provisioning. Here is an overview diagram from Citrix: The ability to support User Layers has been in the “Labs” (previews of potential functionality for futur... read more.

  • October 16, 2018

By Brian Wagner, Posted in Infrastructure, Support

As IT administrators, we are often asked how we can be more proactive to reduce exposure to issues that may arise. In Citrix XenApp and XenDesktop 7.18, a new feature was introduced to help identify issues from user locations to the Citrix environment hosting the applications and desktops. This feature, Application Probing, has a few requirements, but is not too difficult to set up and can provide immediate value. Application Probing requires the following: Citrix XenApp / XenDesktop 7.18 or newer runni... read more.

  • June 28, 2018

By Brian Wagner, Posted in

Cloud First At this time of year, we often meet with our customers and ask the question “What are your initiatives for next year?” Over the last few weeks, and really throughout 2017, we’ve been hearing a lot of cloud, cloud, cloud. The change in mentality is moving quickly. A year ago, a company may have said they have concerns around security and data, and they are going to stay where they have investment. Today’s meetings consist of our customers pushing us to figure out how they... read more.

  • December 01, 2017

By Brian Wagner, Posted in Infrastructure, Virtualization

Traditionally, to take advantage of SmartAccess or VPN, along with the new RDP Proxy functionality, Citrix Access Gateway Universal licenses were required. Standard and Enterprise appliances included 5 CAG Universal licenses for testing. Otherwise, ICA Only licensing was included to allow remote access to Citrix but no SmartAccess functionality. The platinum appliances included 100 licenses. If you are a Citrix XA or XD Platinum customer, the CAG Universal licenses were included for as many XA/XD licenses t... read more.

  • October 11, 2016

By Brian Wagner, Posted in Infrastructure

If you have worked with a NetScaler SDX before, there might have been a time in which you lost access to the VPX due to a change in configuration (say, adding a route). The easy solution is to reboot, typically reverting back to the last configuration. But then you don't get to troubleshoot what's happening, and may have a hard time figuring out what may need to be changed to get to the desired state. Well, it turns out you can connect to the console of the VPX through XenServer. The steps are below: ... read more.

  • December 17, 2015

By Brian Wagner, Posted in Uncategorized

NetScaler 10.5 has been out for a while now, and we have been standardizing on the new version with success. But, what's new in 10.5? Is it worth upgrading my NetScalers? There are over 100 new features in version 10.5, but here are a few notables: 1) NO JAVA - OK, so there is still some Java. But, it is very much out of the way of day-to-day activities. This is a welcome treat for sure which makes administration much easier from any machine without going through hoops. That being said, I am sure the... read more.

  • January 02, 2015

By Brian Wagner, Posted in Uncategorized

VMware recently released updates to both ESX 5.1 and 5.5 that cause the NetScaler VPX to lose networking. ESX 5.1 EP5 and ESX 5.5 Update 2 both cause the issue. The issue is described from Citrix as: NetScaler VPX network connectivity issue on VMware ESXi 5.1.0 2191751 and VMware ESXi 5.5 Build 2143827 is caused by tx_ring_length mismatch, which causes TX stalls. There is a fix, which involves running a command from the console of the VPX: echo hw.em.txd=512 > /flash/boot/loader.con... read more.

  • November 24, 2014

By Brian Wagner, Posted in Security

I've been getting hammered with clients asking about Shellshock. Are the various products they have implemented vulnerable? Is there a fix yet? How can we implement the fix? What is the work effort? While all external facing Linux servers should definitely be patched, the NetScaler can be used to provide protection for your Linux servers now. Even if no fix has been made available yet for your Linux-hosted web application, the NetScaler Application Firewall feature has the ability to look for attempts to... read more.

  • October 08, 2014

By Brian Wagner, Posted in Uncategorized

Today, Citrix XenApp 7.6 was released (and XenDesktop 7.6). It addresses some features that have been "missing" from XenApp since the 7.x platform was released. If this release is all it's cracked up to be, I think you'll see most XenApp customers on 6.x (or those still on 4.5, you know who you are) will be looking to upgrade to 7.6 sooner than later. So, what exactly is in 7.6 that changes this thinking? Connection Leasing - Remember the local host cache? Well most of my clients do, and have noted it... read more.

  • September 30, 2014

By Brian Wagner, Posted in Infrastructure

Windows XP end-of-life (EOL) was highly publicized. Some companies have been in the clear for awhile, others made a mad dash to the finish, while a few are still struggling ( But, I can say it has been on people's radar for awhile. Windows 2003 seems to be the sleeper. Windows 2003 will reach EOL in July 2015. Server upgrades are a different type of challenge, as they support ap... read more.

  • August 21, 2014