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Migration between IXP Peering LANs on VyOS – how-to

July 17, 2021

With DE-CIX Munich having an upcoming migration to accommodate for new members, we’re up against the challenge to re-address all our peering sessions. Approach As I’m both lazy and not that good at programming, I quickly jump to for loops and usage of awk.Of course there’s more elegant ways, but I know it works well, and it’s easier to understand and read. Given the information by DE-CIX, the migration is from 80.81.202/24 to 185.1.208.0/23.As there’s nothing on the upper /24, we don’t need to account for that in this migration. Deleting the old peers The command we’ve used is as

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Artillery barrage – Stories from the trenches #3

March 11, 2021

Would you post your address on social media and say you are having an all invited free party? Chances are you won’t. Because you know that this will result in some unwanted guests that can turn your house into a mess if not worse. By installing a Minecraft server you are doing exactly the same but with worse consequences as it will not only effect your own house but also the houses of your (virtual) neighbours. This what happened to one of our customers Timeline 1st attack. The first attack took place on Wednesday the 17th during the night. The

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weird network problems – anything shouts at everything

August 27, 2020

preamble – analogies Imagine you have a car. Your car is something that needs to be maintained, so sometimes you fill in a bit of engine oil. Especially when it lights up with the check oil light. Similar to that, a computer sometimes asks for updates so you install them. Imagine if your car engine oil suddenly causes the side effect that you’re driving along nicely, but suddenly your car changes. Your Steering wheel is suddenly on the right shotgun seat, while the driving pedals are still on the left side. You’re asking for the car mechanic, but even the

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Change Windows Server 2019 Evaluation edition to Standard

June 29, 2020

It would make sense to think that when you start with a Windows Evaluation edition and you have spend a lot of time to make it work in your infrastructure and you are happy with it and what to use it, that it would be easy to change it into a regular version. Something like: buy a licence, add the licence key and you are done. But that is not how it works. A Windows Evaluation server works for 180 days and after that it will simply stop. Trying to add a normal licence does not work. You have lost

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Small Stories from the trenches

April 21, 2020

Sometimes it’s funny – you have a server that is totally not behaving well, and when you finally find it out you’ll be like “I need to put this somewhere so I can find it again. “ Well, and where do I find these tricks most of the time? On other blogs – so lets start by sometimes putting out small stories from the trenches. So, what happend yesterday was an interesting story. We are providing a businesspartner of ours a small VM in our network, so they can actually have a redundant DNS Server (DNS Servers are the phonebook

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Homeoffice and us

March 13, 2020

It’s March, 2020. The dominating theme in every single media outlet? Beer. Or isn’t it? Well, the word nobody can hear anymore is “Corona” – and in some way it also affects us as a business. By our customer basis, we are dealing with a pretty side spectrum of customers. Some customers, like coffee shops and hotels, we are normally going on site, and take care of the Infrastrucutre of the customer on premises. Mostly, as a convenience and better service to the customer. But a lot of it can be done remotely, and via teamviewer.   On the other

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