La virtualisation de machine virtuelle sous OpenBSD est officiellement disponible nativement dans le système de base depuis OpenBSD 5.9. Néanmoins, la FAQ Virtualisation (EN, FR) apparaît à partir d'OpenBSD 6.4 - (preuve d'une certaine maturité !?)

Un petit mémo sur l’utilisation de l’outil photorec et comment trier automatiquement par extensions la restauration des données.

Quand mastodon.social reste le point d'accès le plus connu de la Fédiverse, il est bon de rappeler que la nature profonde du fonctionnement de ce réseau social est d'être décentralisé.

Mastodon a ceci de génial qu'il autorise quiconque à créer son bout de réseau.

À chaque vague de nouveaux, le problème est le même : les gens se font majoritairement un compte sur Mastodon.social et, à chaque fois, certains et certaines souhaiteraient que son administrateur coupe les inscriptions et redirige le flux vers d'autres instances. Alors oui, comme le signale le message d'Eugen ci-dessous, il est très difficile de couper les inscriptions de l'instance la plus connue sans gêner l'arrivée des nouveaux.

Whether you're a software developer or a sysadmin, I bet you're using SSH keys. Pushing your commits to Github or managing your Unix systems, it's best practice to do this over SSH with public key authentication rather than passwords. However, as time flies, many of you are using older keys and not aware of the need to generate fresh ones to protect your privates much better. In this post I'll demonstrate how to transition to an Ed25519 key smoothly, why you would want this and show some tips and tricks on the way there.

Salt est un logi­ciel de gestion de confi­gu­ra­tion comme Puppet ou Ansible.
Je l’uti­lise chez Frama­soft et sur mon infra person­nelle parce que je l’aime bien :
rapide ;
très bien docu­menté ;
syntaxe claire, acces­sible mais néan­moins flexible et puis­sante.

Transparently transform the macOS CLI into a fresh GNU/Linux CLI experience by

installing missing GNU programs
updating outdated GNU programs
replacing pre-installed BSD programs with their preferred GNU implementation
installing other programs common among popular GNU/Linux distributions

Aujourd'hui, j'aimerais parler à propos d'OpenVPN. Pour ceux qui ne connaissent pas, OpenVPN est un logiciel libre et avec le code est ouvert et qui implémente des différentes façons de créer des réseaux virtuels (VPN) sécurisés * Wikipedia. L'application est développée par OpenVPN Incorporation et il propose également différents services payants privatetunnel.

OpenSMTPD proc filters & fc-rDNS

Après un premier article expliquant comment configurer l'interface réseau d'une machine virtuelle KVM sur Proxmox VE en utilisant qemu-nbd, il était nécessaire d'y ajouter une seconde partie pour détailler l'une des nouvelles fonctionnalités de Proxmox.

How do I use the grep command with regular expressions on a Linux and Unix-like operating systems ? How do I use grep and regular expressions to search for text/ words in Linux ?

SSH Auditor - The Best Way To Scan For Weak Ssh Passwords On Your Network

Tuning #FreeBSD for routing and firewalling

In this article I'll tell you how to set up hidden crypto-container using regular means of Linux OS (LUKS and cryptsetup). Standard features of LUKS (such as using external headers and placing actual data by predefined offset) allow user to access hidden data within existing container and deny existence of such data.

Have you ever encountered a moment when you see your colleague using some simple Linux commands for tasks that took you several keystrokes? And when you saw that you were like, “Wow! I didn’t know it could have been done that easily”.

Emulate ssh -D behavior even if AllowTcpForwarding is disabled by administrator in sshd_config. This tool creates the tunnel sending serialized data through STDIN to a remote process (which is running a Socks5 Server) and receiving the response trought STDOUT on a normal SSH session channel.

As you might have realized already, I am not really a big fan of systemd.

After switching from Debian to Devuan not long after the first fork was announced, I have now been a Devuan GNU/Linux user for several years, and am really happy with the overall experience and stability of this systemd-free Linux distribution.

I like VirtualBox and it has nothing to do with why I publish a 0day vulnerability. The reason is my disagreement with contemporary state of infosec, especially of security research and bug bounty.

Nginx (short for Engine-x) is a free, open source, powerful, high-performance and scalable HTTP and reverse proxy server, a mail and standard TCP/UDP proxy server. It is easy to use and configure, with a simple configuration language. Nginx is now the preferred web server software for powering heavily loaded sites, due its scalability and performance.

When you issue a docker build command, the current working directory is called the build context. To exclude files not relevant to the build (without restructuring your source repository) use a .dockerignore file. This file supports exclusion patterns similar to .gitignore files. For information on creating one, see the .dockerignore file.

Le dashboard de Kubernetes - Blog de dada