If you run a Linux server or workstation, the file system is not just a place where “park” file, but your first line of defense against data corruption. Today we talk about Btrfs, un file system copy-on-write (CoW) which offers native tools to manage integrity and redundancy. Read more
My trusty companion on a thousand digital adventures, a Huawei P30 Pro purchased seven years ago now, has officially reached the end of the line. The drums are struggling, the software hasn't received updates in forever and, although the camera still does its job, overall performance is starting to show signs Read more
Posted on 21 January 2026 You know those IoT devices (video intercoms, cameras, sensors) which suddenly become useless because the official app disappears from the stores or the cloud servers in China are turned off, transforming the device into a useless and expensive paperweight? It happened to me with an Unotec based IP Cam Read more
It all started with a mystery (and very economical) IP surveillance camera from Unotec. Without documentation and without access to the web interface, the only way to understand how it worked was “get inside”. In this first part, we'll see how I managed to download the internal configuration and decode the file Read more
When we talk about safety in remote access via SSH, One of the least known but potentially useful methods is SSH Knock, based on the Port Knocking technique. The idea is simple: Instead of leaving the ssh door (typically the 22) always open and visible, It is kept closed and opens it Read more
If you have ever worked with a Linux server or install a software, You will probably have met commands like Chmod 755 of chodd 777. But what these numbers really mean? And how they influence access to files? Basic permits in Linux, Each file or folder has Read more
Today we see how to shut down a computer with Debian physically without launching the “poweroff” command line or GUI interaction. Enabling this function can be useful if we are operating on a headless server (a home server for example) to which no peripherals are connected. Without having to connect in SSH Read more
The SSH protocol (Secure SHell) is an encrypted protocol used to establish secure connections between two machines: customer e server. By itself it's already a pretty secure protocol, but with SSH keys you can close SSH access to only specific machines. Here's how. In this mini-guide we will see how Read more
Today we see how to control a remote machine via gui with VNC through a secure SSH tunnel. For the uninitiated, in a nutshell, VNC (Virtual Network Computing) is a remote display system that allows you to see an environment “desktop” (GUI) running not only on the machine on which Read more
In this article we will deal with creating a VPN connection via a PC with Linux and a FRITZ!Box 4020. The instructions in this guide also apply to other FRITZ routers!Box then if the 4020 it is not your model however try to follow the guide, passages often Read more