You've probably come across advertisements or commercial partnerships promoting VPNs that promise secure browsing and prevent tracking. Let's take a look at whether this is really true. First, before we delve into this topic, it's necessary to ask a fundamental question: What is a VPN? By definition, ... Read more
As you know, cyberattacks are a daily occurrence for sysadmins and developers. Just look at the latest news; they're becoming increasingly aggressive. Today, we'll focus on some best practices for preventing and protecting against malicious attacks. Positioning services and... Read more
Proxmox is a very good KVM-based virtualization system, but sometimes minor problems arise. I had a case where a backup failed overnight, making it impossible to restart the VM or modify its configuration. There's a command that allows you to... Read more
A few days ago, I migrated my web server, moving the sites I manage from Apache to Nginx. When a Prestashop store was moved, I was surprised to discover that all the pages I viewed (homepage, products, management console, etc.) were completely blank (but without any visible error codes)... Read more
If you have a server running on TrueNAS Core and are using a ZFS RAID array, you've probably noticed that the ZFS cache is consuming a lot of RAM. It's sometimes necessary to limit the RAM used by ZFS, especially in the case of unstable virtual machines, or, as in my case... Read more