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today's howtos

Submitted by Roy Schestowitz on Sunday 28th of February 2021 10:28:51 AM Filed under
HowTos
  • My pragmatic sysadmin view on subdomains and DNS zones

    This question is interesting to me because I had a completely different view of it than Julia Evans did. For me, NS and SOA DNS records are secondary things when thinking about subdomains, down at the level of the mechanical plumbing that you sometimes need. This may surprise people, so let me provide a quite vivid local example of why I say that.

  • An Exploration of JSON Interoperability Vulnerabilities

    JSON is the backbone of web application communications. The simplicity of JSON is often taken for granted. We don't usually consider JSON parsing as part of our threat model. However, in our modern, multi-language, microservice architectures, our applications often rely on several separate JSON parsing implementations, each of which has its own quirks.

    As we've seen through attacks like HTTP request smuggling, discrepancies across parsers combined with multi-stage request processing can introduce serious vulnerabilities. In this research, I conducted a survey of 49 JSON parsers, cataloged their quirks, and present a variety of attack scenarios and Docker Compose labs to highlight their risks. Through our payment processing and user management examples, we will explore how JSON parsing inconsistencies can mask serious business logic vulnerabilities in otherwise benign code.

  • Hardware RAID on the Raspberry Pi CM4

    After a long and arduous journey involving multiple driver revisions and UART debugging on the card, I was able to bring up multiple hardware RAID arrays on the Pi.

  • The Tao of Continuous Integration

    It is a truism in modern software development that a robust continuous integration (CI) system is necessary. But many projects suffer from CI that feels brittle, frustrates developers, and actively impedes development velocity. Why is this? What can you do to avoid the common CI pitfalls?

  • Install Kali Linux on Chromebook: Tips and Tutorials

    If you need more system privileges on your Chromebook, Kali Linux might be right for you, especially since Linux is free and open-source. But remember that this operating system is mainly for penetration testing and not very convenient for daily work.

  • How to install the Foxit reader on Linux

    The Foxit Reader is free PDF software for Linux, Mac, and Windows. It is open-source software. With it, users can create as well as annotate and collaborate with PDF files. Here’s how to install it on Linux.

  • How To Install Git on Manjaro 20 - idroot

    In this tutorial, we will show you how to install Git on Manjaro 20. For those of you who didn’t know, Git is a distributed version control system. Git is a free software designed to handle everything from small to very large projects with speed and efficiency. It can be easy to learn and used for tracking changes in source code during software development. Git has the features of data integrity, non-linear workflows, and fast performance.

    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 through the step-by-step installation of Git on a Manjaro 20 (Nibia).

  • How to manage Flatpak permissions graphicly?

    Finding difficulties to manage Flatpak permissions using command lines? Maybe you should give Flatseal a try.

    The main purpose of Flatpak is to provide a centralized service for distributing applications. But while Penguin users enjoy the taste of updated and secured Linux apps, they have hard time managing Flatpak permissions for the lack of graphical front-end which helps them do so.

    Here the important of the Flatsealutility, which developed by the enthusiast engineer Martin Abente Lahaye, appears.

»

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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.

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