How to harden OpenSSH server
A short article to quickly getting your OpenSSH server hardened.
Running your own AI in-house – Part 3 – LLM/LVM – Ollama on Telegram
In this quick guide I'll show you how to connect Ollama to Telegram with a pre-made bot – ready to use!
Quickly connect Tailscale to Headscale on Linux
Let's say you have a headscale server, and now you'd like to connect your Linux machines to your self-hosted tailnet. The first thing we gotta do, is installing tailscale; curl -fsSL https://tailscale.com/install.sh | sh Or if we wanna do it manually, in the case of Ubuntu 24.04, we first get [...]
A Simple Entry Guide to Btrfs Snapshots (Part 1)
In this guide (part 1) I'll briefly explain what Btrfs snapshots are and how to set up automatic local snapshots.
How to (properly) uninstall acme.sh
How to properly uninstall acme.sh
Customize Ubuntu’s MOTD you see on SSH
In this guide I'll show you how to customize the MOTD on your Ubuntu installation to remove ads, adding useful info and even having some fun!
Running your own AI in-house – Part 2 – LLM/LVM – Ollama on the Web (API) and Code Editor
Let's continue our article series by taking a look at the HTTP API, optimizing the systemd service, putting Nginx in front of it with HTTPS and making sure authentication is required; finally, we set up our code editor config to use our remote instance.
How to quickly get hostnames of a TLS certificate
Use OpenSSL and awk to quickly extract hostnames from a certificate file!
How to verify SSH host keys and optionally using SSHFP in DNS
In this article I'll guide you through verifying SSH host keys manually, then the crazy shell shenanigans way, and finally we'll talk about SSH keys in SSHFP DNS(SEC) records!
Linux with compressed RAM!
Today we'll recreate Apple Magic on Linux (kind of)