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Security News

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  • Microsoft’s Windows RT security patch also stops you from loading Linux

    It was big news when Microsoft announced it was working on a version of Windows that would run on tablets with ARM-based processors… but by the time Windows RT actually launched it was a lot less exciting. Devices like the Microsoft Surface and Surface 2 couldn’t run desktop Windows apps and weren’t significantly cheaper than Intel Atom-powered tablets running the full version of Windows, and they didn’t even get better battery life.

  • The sad state of Linux download security

    Installation images for many of the most popular Linux distributions are difficult or impossible to obtain securely via download.

  • Why we use the Linux kernel's TCP stack

    Let's start with a broader question - what is the point of running an operating system at all? If you planned on running a single application, having to use a kernel consisting of multiple million lines of code may sound like a burden.

    But in fact most of us decide to run some kind of OS and we do that for two reasons. Firstly, the OS layer adds hardware independence and easy to use APIs. With these we can focus on writing the code for any machine - not only the specialized hardware we have at the moment. Secondly, the OS adds a time sharing layer. This allows us to run more than one application at a time. Whether it's a second HTTP server or just a bash session, this ability to share resources between multiple processes is critical. All of the resources exposed by the kernel can be shared between multiple processes!

    [...]

    Having said that, at CloudFlare we do use kernel bypass. We are in the second group - we care about performance. More specifically we suffer from IRQ storms. The Linux networking stack has a limit on how many packets per second it can handle. When the limit is reached all CPUs become busy just receiving packets. In that case either the packets are dropped or the applications are starved of CPU. While we don't have to deal with IRQ storms during our normal operation, this does happen when we are the target of an L3 (layer 3 OSI) DDoS attack. This is a type of attack where the target is flooded with arbitrary packets not belonging to valid connections - typically spoofed packets.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.