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# Introduction This blog post is about designing firewall rules, not focusing on a specific operating system. The idea came after I made a mistake on my test network where I exposed LAN services to the Internet after setting up a VPN with a static IPv4 on it due to too simplistic firewall rules. While discussing this topic on Mastodon, some...

# Introduction Last month, I decided to leave the OpenBSD team as I have not been using OpenBSD myself for a while. A lot of people asked me why I stopped using OpenBSD, although I have been advocating it for a while. Let me share my thoughts. First, I like OpenBSD, it has values, and it is important that it exists. It just does not fit all...

# Introduction As I moved my infrastructure to a whole new architecture, I decided to only expose critical accesses to dedicated administration systems (I have just one). That workstation is dedicated to my infrastructure administration, it can only connect to my servers over a VPN and can not reach the Internet. This blog post explains why I am...

# Introduction In this blog post, you will learn how to make secure backups using Restic and a S3 compatible object storage. Backups are incredibly important, you may lose important files that only existed on your computer, you may lose access to some encrypted accounts or drives, when you need backups, you need them to be reliable and secure....

# Introduction Snap package format is interesting, while it used to have a bad reputation, I wanted to make my opinion about it. After reading its design and usage documentation, I find it quite good, and I have a good experience using some programs installed with snap. => https://snapcraft.io/ Snapcraft official website (store / documentation)...