Citrix NetScaler: Cannot load applet (7u51)

Written by Ingmar Verheij on January 20th, 2014. Posted in Netscaler

Java Update Available

TIP: NetScaler 10.5 uses HTML5 instead or JRE for most configuration features! Hooraaayyy! – link

On January 14 Oracle released Java Runtime Environment (JRE) 7 update 51. Just like previous updates the raised the security level which could potentially break existing applications. We saw the same when they released 7u45, back then I found a more constructive (but complex) solution to solve a problem where the GUI hanged at “Downloading Applet..

Citrix updated their NetScaler software to meet the requirements of Oracle on December 3rd (download, release notes) – I hope that back then you reverted to a more secure JRE. Unfortunately JRE 7u51 gave me again problems, this time the Java Applet could not be loaded.

Citrix NetScaler: DSR, a poor man’s load balancing solution

Written by Ingmar Verheij on January 8th, 2014. Posted in Netscaler

Gartner Magic Quadrant for Application Delivery Controllers 2013There are occasions where you need a good load balancer but don’t have the budget. Microsoft offers Network Load Balancing services (NLB) as part of their Windows server operating systems, but although we’re looking for a cheap solution we try to avoid problems. This is where the Citrix NetScaler comes in. Gartner positioned the NetScaler ADC in the leaders quadrant of the Magic Quadrant for Application Desktop Controllers (for the 7th consecutive year in 2013), proving it to be good solution and a reliable partner. Using Direct Server Return (DSR) mode we can offer a “poor man’s solution”.

In this article I’ll explain why you might (not) want to implement Direct Server Return (DSR), how it works and of course how to configure it!

Citrix NetScaler: Cache Microsoft App-V sequences

Written by Ingmar Verheij on January 3rd, 2014. Posted in Microsoft App-V, Netscaler

Citrix NetScaler: Cache Microsoft App-V sequencesRecently I wrote about streaming App-V 5 packages via HTTP. Using caching in IIS performance can be enhanced while resource consumption on the SMB share are minimized. Since we’re using HTTP for streaming it’s not unlikely a load balancer is used to divide the traffic to multiple App-V streaming servers adding another hop.

When a Citrix NetScaler is used to load balancing App-V Streaming Servers you could use Integrated Caching to cache resources. When resources are cached on the load balancer less network traffic is generated. Integrated Caching is part of the Platinum or Enterprise edition with Caching option.

Citrix NetScaler 10.1: Where did the Configuration Wizard go?

Written by Ingmar Verheij on December 23rd, 2013. Posted in Netscaler

Configuration WizardA vanilla Citrix NetScaler shows the configuration wizard right after a users authenticates using the GUI. The configuration wizard enables basic configuration like the NetScaler IP (NSIP), Subnet IP (SNIP), hostname, DNS, Time Zone and Administrator Password.

Sometimes it’s useful to open the configuration wizard after it is closed (for instance if you want to change the host name via the GUI). up to NetScaler 10.0 there was a Setup Wizard button on the System > System Information page.

Bring Your Own Mac

Written by Ingmar Verheij on December 23rd, 2013. Posted in Desktop Player

Bring Your Own MacThe Bring Your Own Device (BYOD) trend is no longer a hype, we see more and more people bringing their (own) Mac to the office. The simplicity of Apple devices combined with the power (and of course the esthetics)  makes them a wanted device. More and more people consider an Apple MacBook to be a serious option to replace their (corporate dictated) Dell / HP / IBM / Lenovo / etc laptop.

From a corporate IT perspective the BYOD trend is a pain in the ass. All of the sudden IT is confronted with unmanaged devices (if you bring your own, support your own) that need to access corporate resources. In real life there is no such thing as unmanaged devices. If your CFO has a problem with his shiny MacBook Pro you fix it.

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