A few days ago I ran into a curious problem: Pi-hole running on Docker, inside my OpenMediaVault based NAS, kept throwing unexplained errors in the pihole-FTL log. Everything apparently worked, but lines like these appeared in the log: or again: After a bit of research and testing 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
Those who often work via ssh know how frustrating it can be losing their connection during a remote session. Maybe you're updating a server, performing an RSYNC, or monitoring a service with top, And suddenly ... Timeout. Eternal Terminal (ET) It is a small open source software that tries to solve this problem. It is Read more
There are several online tools to test your connection speed, one of them is the Speed Test by Ookla and the Google speed test. Tools like the latter are certainly useful and fast if we need to test the speed of the network to which the computer is connected Read more
I wasn't at home yesterday… and I remembered that I have an important file in my NAS, at home. I can access my NAS via the VPN I have activated, but the document is found in a path that I didn't remember at the time, instead among the few things that Read more
A few articles ago we talked about screen: a command line application that allows you to create virtual sessions containing virtual terminal windows to which we can connect or disconnect at will via the current terminal session. Screen is a very powerful program, intuitive after a few uses, what can he do Read more
Today we see how to use screen. I recently had to run commands that expected a very long duration on a remote server. In my latest article, eg, I described how to transfer data between an older NAS and a modern NAS via FTP. In that case I have Read more
Sometimes, especially when we are dealing with offices where security is taken with a light heart, it happens that we do not find the root password or the password of a system user. When the system is Linux get access to the files again (Related articles Read more
The df command is used to check the capacity and saturation of the connected devices. The same purpose is that of the duf command, with the difference that the output will be formatted in an easily intelligible way by the user. This program is open source and available for GNU / Linux (sources, but also in pre-compiled RPM packages Read more