Let’s imagine we have an internal web app and we want to expose it securely over the internet only to a selected group of people. There are multiple ways to…

Many of us now work from home or stay at home and spend many hours online. Being online it’s almost a necessity: from ordering food through work to entertainment. I’ve…

This year allowed many people to work from home and because of that most of the communication had to be moved online. I always wanted to try to setup some…

“An example of a really responsible system is the system the Romans used when they built an arch. The guy who created the arch stood under it as the scaffolding…

I run most of my containers with LXC. Just recently I discovered that there is a automatic way of making snapshots and expiring them. All you have to do is…

I wanted simple and secure shell access to my home lab, which runs many containers. I have physical u2f key from Yubico, so I wanted to have second factor with…

This post will be about Folding@home. If you don’t know what Folding@home is, please read https://tomasz.jarosik.online/2020/03/donate-computing-power-for-covid-19-research/ first. Big thank you to everyone who joined team 255025 ( https://stats.foldingathome.org/team/255025 ). The…

How to deal with phishing and scammers. Currently more people use the Internet as they have to stay at home. But there are some people out there who will use…

If you are reading this, you have a computer. How do you use it? I bet your computer can do much more that you think. And I want to present…

Really good explanations of algorithms at https://cp-algorithms.com (I recently went through https://cp-algorithms.com/data_structures/segment_tree.html, so my opinion is mostly based on that article). “Nothing is more responsible for ‘good old days’ then…