today's howtos

posted by Roy Schestowitz on Apr 01, 2026

• C.J. Collier: Finding: Promoting SeaBIOS Cloud Images to UEFI Secure Boot (Proxmox)

• TecMint ☛ df Command in Linux: Disk Space, Inodes & Real Fixes

  The ‘df‘ command stands for “disk filesystem“, it is used to get a full summary of available and used disk space usage of the file system on the Linux system.

• APNIC ☛ The potential of erroneous outbound traffic

  In this post, we highlight research that shows erroneous outbound traffic (traffic initiated by internal hosts that elicit no response) is a powerful and underused signal for uncovering silent anomalies. By focusing only on this narrow slice of traffic, we show how operators can unveil long-standing misconfigurations, stale deployments, and even signs of compromise that would otherwise remain hidden.

• Muxup ☛ Minipost: Routing a Linux user's traffic through a WireGuard interface

  Simple goal: take advantage of my home router's WireGuard support and have one of my external servers connect using this, and pass all traffic from a certain user through that interface.

• CSS Tricks ☛ Abusing Customizable Selects | CSS-Tricks

  Web browsers ship new features all the time, but what fun is it if we can’t build silly and fun things with them?

  In this article, let’s go over a few demos that I’ve made by using the new customizable <select> feature, and walk through the main steps and techniques that I’ve used to implement them.

• Noah Bailey ☛ How to turn anything into a router

  I don’t like to cover “current events” very much, but the American government just revealed a truly bewildering policy effectively banning import of new consumer router models. This is ridiculous for many reasons, but if this does indeed come to pass it may be beneficial to learn how to “homebrew” a router.

  Fortunately, you can make a router out of basically anything resembling a computer.

  I’ve used a linux powered mini-pc as my own router for many years, and have posted a few times before about how to make linux routers and firewalls in that time. It’s been rock solid stable, and the only issue I’ve had over the years was wearing out a $20 mSATA drive. While I use Debian typically, Alpine linux probably works just as well, perhaps better if you’re familiar with it. As long as the device runs Linux well and has a couple USB ports, you’re good to go. Mini-PCs, desktop PCs, SBCs, rackmount servers, old laptops, or purpose built devices will all work.

  To be clear, this is not meant to be a practical “solution” to the US policy, it’s to show people a neat “hack” you can do to squeeze more capability out of hardware you might already own, and to demonstrate that there’s nothing special about routers - They’re all just computers after all.

• LinuxConfig ☛ How to Install Redis on Ubuntu 26.04

• LinuxConfig ☛ How to Install GCC and Compile C/C++ Programs on Ubuntu 26.04

• LinuxConfig ☛ How to Install .deb Packages on Ubuntu 26.04

• LinuxConfig ☛ How to Configure Automatic Security Updates on Ubuntu 26.04

• ID Root ☛ How To Configuring Network Bridge on Fedora 43

  If you run virtual machines on Fedora 43 and your VMs can only reach the internet but nothing on your local network can reach them back, the root cause is almost always NAT-based networking.

• ID Root ☛ How To Install Zenmap on Debian 13

  Network security starts with visibility. If you cannot see what is running on your network, you cannot protect it. Zenmap is the official graphical user interface for Nmap, and it gives you a visual, beginner-friendly way to perform network discovery and security auditing without memorizing long command flags.