A blog about virtualization, cloud, storage, networking and IT stuff.

Michael White published the third release of his “What is in the bag” blog post.

This is only a short blog post to document a solution for a very annoying problem.

It is common that vendors offer their products in special editions for SMB customers.

TL;DR: I have passed the VCAP6-DCV Deploy exam today. :) I want to thank Fred, Dominik, Frank and Jens-Henrik for kicking my ass.

I have worked with a lot of backup software products during my career, but for the last years I have primarily worked with MicroFocus Data Protector (former HP OmniBack, HP Data Protector, or HPE Data Protector), and Veeam Backup & Replication.

When taking a backup with Veeam Backup & Replication, a VM snapshot is created to get a consistent state of the VM.

In January 2017, I wrote an article about how to protect your Wordpress blog using the WP Fail2Ban plugin, fail2ban on your Linux/ FreeBSD host, and CloudFlare.

This is just a short, but interesting blog post.

Sometimes you have to replace SSL certificates instead of updating them, e.g. if you switch from a web server SSL certificate to a wildcard certificate.

Usually, bypassing a firewall is not the best idea.

Last week I had an interesting incident at a customer.

The last two days, I have supported a customer during the implementation of 802.1x.

A couple of days ago, I took the HP0-Y47 exam “Deploying HP FlexNetwork Core Technologies”.

During the replacement of some VMware ESXi hosts at a customer, I discovered a recurrent failure of the vSphere Distributed Switch health checks.

By accident, I found a heartbeat/ VLAN issue on a NetScaler cluster at one of my customers.

In 2014, Microsoft announced the Azure Preview Portal, which was going GA in December 2015.

The Informationsverbund Berlin-Bonn (IVBB), the secure network of the german government , was breached by an unknown hacker group.

A customer of mine got an appliance from a software vendor.

Some days ago, I have implemented one-time passwords (OTP) for NetScaler Gateway for one of my customers.

On January 18, 2018, Microsoft has published KB4074871 which has the title “Exchange Server guidance to protect against speculative execution side-channel vulnerabilities”.

In addition to my shortcut blog post about Meltdown and Spectre with regard of Microsoft Windows, VMware ESXi and vCenter, and HPE ProLiant, I would like to add some additional information about HPE Storage and Citrix NetScaler.

Change History 01-13-2018: Added information regarding VMSA-2018-0004 01-13-2018: HPE has pulled Gen8 and Gen9 system ROMs 01-13-2018: VMware has updated KB52345 due to issues with Intel microcode updates 01-18-2018: Updated VMware section 01-24-2018: Upd…

Each of us has his or her personal tool chain.

Exchange has known the concept of internal and external URLs for the different services (Outlook Web Access, OAB, EWS, ActiveSync etc) since Exchange 2007.

Yesterday, a customer called me and told me about a scary observation on one of his Exchange 2016 DAG (Database Availability Groups) nodes.

As part of a bigger Microsoft Exchange migration, one of my customers moved the in- and outbound mailflow to a newly installed mail relay cluster.

Microsoft two different logins for their services: Microsoft Account (former Live ID) work or school account (Azure AD) Both are located in different directories.

Update On November 22, 2017, Ajay Patel (Senior Vice President, Product Development, Cloud Services, VMware) published a blog post in reaction to Microsofts announcement (VMware – The Platform of Choice in the Cloud).

Last friday I passed the 1Y0-351 (Citrix NetScaler 10.5 Essentails and Networking) exam with a pretty good score.

In the last months I came across several customers that were in the process to evaluate, or to deploy Office 365.

I have wrote about the installation of PowerShell Core in Linux Mint 18 yesterday.

Beside my Lenovo X250, which is my primary working machine, I’m using a HP ProBook 6450b.

Note: I trashed this blog post several times.

Open network ports in offices, waiting rooms and entrance halls make me curious.

Starting with release 11.1, NetScaler ADC offers an easy way to redirect traffic from HTTP to HTTPS within the configuration of a load-balanced vServer.

Last month, I wrote about a very annoying issue, that I discovered during a Windows 10 VDI deployment: Roaming of the AppData\Local folder breaks the Start Menu of Windows 10 Enterprise (Roaming of AppData\Local breaks Windows 10 Start Menu).

Disclaimer: The information from this blog post is provided on an “AS IS” basis, without warranties, both express and implied.

When dealing with Microsoft Exchange restore requests, you will come across three different restore situations: a database a single mailbox a single mailbox item (mail, calendar entry etc.)

Today, this tweet caught my attention.

One of my customers has started a project to create a Windows 10 Enterprise (LTSB 2016) master for their VMware Horizon View environment.

While searching for a simple monitoring für my root servers, I’m stumbled over a python-based software called Simplemonitor.

I don’t like to use untrusted networks.

I switched my mobile carrier and my new carrier doesn’t offer multi SIM (but hey, it’s cheap and sufficient for my needs).

TL;DR: There’s a script at the bottom of the page that fixes the issue.

Today, I had a very interesting discussion.

When I talk to customers and colleagues about cloud offerings, most of them are still concerned about the cloud, and especially about the security of public cloud offerings.

Last Wednesday, VMware has published a list with the vExperts for 2017.

Two 3PAR StoreServs running in a Peer Persistence setup lost the connection to the Quorum Witness appliance.

A RemoteApp is an application, that is running on a Remote Desktop Session Host (RDSH), and only the display output is sent to the client.

Patrick Terlisten/ vcloudnine.de/ Creative Commons CC0 Certificates are always fun… or should I say PITA?