Uncategorized – Page 2 – WirelessMoves

Quantum Safe – Some Thoughts

There is quite a bit of momentum in the industry right now to prepare for the day when quantum computers have become powerful enough to break today’s authentication- and encryption algorithms. Here’s a video that explains the issue to a general audience. All of this got me thinking about what that means for my data, particularly the data I exchange with my self-hosted cloud services today. So here are some thoughts on the topic, to be revisited from time to time as the topic comes up again.

Note Taking with Joplin

While listening to talks at conferences, I tend to take notes either with pen and paper or on my phone or notebook with the Nextcloud note app. While pen and paper notes can be structured nicely, the notes often don’t make it to my digital archive later on and are thus pretty much lost. Hence, they are only useful during the event and perhaps a few days after. Using the Nextcloud notes app is better in this regard, but I can’t quite get my head around how to produce structured markup text. Then, back in summer, I saw someone using an app during a conference that supports structured text input with markup characters: Joplin. It looked interesting, and I finally managed to give the app a try on my notebook and phone during 38c3 at the end of 2024 for taking notes during talks. So let’s have a look how that went.

Wireguard – Ubuntu 24.04 Client

And I’m back with yet another post on Wireguard. After Ubuntu 22.04 has left some mixed feelings when it came to Wireguard, I was positively surprised to see that Wireguard has been finally integrated into Ubuntu 24.04’s GUI. So let’s see if the shortcomings the command line tools have brought with them in previous Ubuntu versions have also been addressed.

Wireguard – Ubuntu 22.04 Client

After setting up a Wireguard VPN Server, the next step was of course to use it with my notebook. Even though it’s 2025, I’m (still) running Ubuntu 22.04 for cross-familiy OS compatibility. Even though Wireguard has been around for quite some years now, Ubuntu 22.04 does not come with native Wireguard NetworkManager support. However, the Debian repository contains at least a number of Wireguard command line tools to bring up a connection. So let’s have a look at those.

Ubuntu 24.04, Virtualbox and the GPU

Another 2 years have come and gone and Ubuntu 24.04 has now been the new Long Term Support (LTS) version for half a year. To plan my eventual migration on my notebook, I’ve been installing 24.04 in a VM running on two different Ubuntu 22.04 hosts. It’s good to see that it works, but the default installation settings end up in a frozen screen and some manual tweaking is required.

Wireguard – A Server With Docker

My OpenVPN installations are aging a bit and every time I go from one major operating system version on the server to the next, it takes some effort to adapt the installation. As I am coming closer to such a point again, I was wondering if I should rather spend my time on a different approach. In recent years, an interesting alternative has gained popularity: Wireguard. Now that Ubuntu 24.04 Desktop comes with built-in Wireguard client support, I thought I’d have another look and see how much effort would be required setting up a Wireguard VPN server.

Starlink – Research Papers

And just to finish with my Starlink Mini post chain for the moment, here’s a link to a web page at the University of Victoria in Canada, which contains interesting links to research papers on Starlink, interesting maps of gateways, POPs and interconnects. One thing I learned from there, for example, was that Starlink has a global 15 seconds handover scheme, i.e. the network or terminal evaluate once every 15 seconds if a different satellite might provide better service. Well worth a look!

Starlink Mini – Part 4 – Being Ahead of the Cat Videos

Perhaps a bit of a strange title for this post but when I recently went to the countryside for a long weekend, I took my Starlink Mini along, just in case. And well, I’m happy I brought it along for the ride.

Starlink Mini – Part 3 – Performance and Obstruction

Continued from part 2: With the truly ‘mobile’ Starlink Mini, I set off with my bicycle and also with a car a few days later to try out satellite Internet connectivity in a number of different places. Particularly, I was interested in how obstructions impact connectivity. Like for the big dish, the connectivity equation is actually quite simple: At least half the sky must be visible and unobstructed, and trees are the natural enemy.

Starlink Mini – Part 2 – Power and Performance

Continued from part 1…

Once having made the decision to order a Starlink Mini, it only took a few days to be delivered. And indeed it is very small and portable compared to the previous hardware and can easily be carried in a small backpack. Part 1 has an image of the Mini on my bike for size comparison. So what about power and performance?

After ‘unboxing’ I went up to the roof of my house to set-up Mini-Dishy there and was rewarded with Internet connectivity around a minute and a half later. Speeds were a bit mixed that evening, but I was able to get around 100 Mbps in the downlink direction and 30 Mbps in the uplink direction in a first speed test with a round trip delay time of around 30 ms. That speed seems to be a bit slower than what I could previously get with the larger dish, but not much, if at all.