2015

“Legacy” network security layer and moving into Software-defined security/networking

Leave a Comment / 13. December 2015

In lack of finding a suiteable subject for this post, I just used the topic legacy to shine some light upon a modern problem in our infrastructure. Modern firewalls have evolved from being a device that handles ACLs to becoming to the term Next-generation firewall, where we have features like Application firewall & Application awareness […]

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ICA vs PCOIP

Leave a Comment / 3. December 2015

First of let me start by stating that the subject of the blogpost is purely to get more viewers… But there is some truth to it, over the last weeks there has been alot of people talking about RDP / ICA / PCOIP and that the protocol wars are over. There are multiple articles on

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Software-defined networking difference between VXLAN and NVGRE

Leave a Comment / 3. December 2015

Myself being quite in the starting phase of software-defined networking and all the different network virtuliazation technologies out there, I thought I would do a summurization between the largest different vendors in this market. What differenciates them (from a protocol perspective) and why on earth would we use them ? First of, network virtualization is

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The mysterious case of 1110 and 1030 errors and PVS

Leave a Comment / 1. December 2015

So been spending a couple of days now troubleshooting a enviroment where external users “sometimes” had issues with connecting (which was completely random) and getting the 1110 and 1030 error messages and also that Wyze thin clients had issues (sometimes) as well. There was only an issue on the specific hosts which were creating

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Netscaler and AAA with CSW One VIP

Leave a Comment / 1. December 2015

As part of the latest release from Citrix Netscaler V11, there was an interesting feature added to the firmware. Which in essence allows ut to add a NO-IP Virtual AAA server, which allow us to add multiple resources lets say behind a CSW vServer where we only use one VIP. This is part of the

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New award, Nutanix Technology Champion!

Leave a Comment / 1. December 2015

Today Nutanix announced their list of Nutanix Technology Champions for 2016, and I am honored to be among the people on the list. Nutanix is doing alot of cool things, and alot more to come http://next.nutanix.com/t5/Nutanix-Connect-Blog/Welcome-to-the-2016-Nutanix-Technology-Champions/ba-p/6382?utm_content=buffer05396&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer I am delighted to announce the 2016 group of Nutanix Technology Champions. This year has seen enormous demand from

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Testing SSL from Netscaler–Issues with SSL handshake

Leave a Comment / 24. November 2015

From time to time we need to setup load balancing to a SSL based service or when setting up connection to a secure Storefront (which is the default) there is one thing that alot of people are missing from the config when setting up, which results in wierd issues or getting SSL handshake errors from

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Load balancing port ranges with Netscaler

Leave a Comment / 18. November 2015

So I got a question earlier today, if it was possible to load balance a specific port range within Netscaler. Now by default we cannot specify a port range when setting up a load balanced vServer or setting up services. In order to ensure that traffic from a specific endpoint going to the same backend

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Software-defined networking difference between VXLAN and NVGRE

Leave a Comment / 17. November 2015

Myself being quite in the starting phase of software-defined networking and all the different network virtuliazation technologies out there, I thought I would do a summurization between the largest different vendors in this market. What differenciates them (from a protocol perspective) and why on earth would we use them ? First of, network virtualization is

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Setting up NFS Direct Veeam against Nutanix cluster

Leave a Comment / 17. November 2015

So the last couple of days I have tried to wrap my head around Direct NFS support which is coming in Veeam v9. The cool thing about this feature is that Veeam has a custom built NFS agent, which will go directly to the NFS share (only needs READ access) and export the snapshot data

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