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today's howtos

Submitted by Roy Schestowitz on Saturday 14th of May 2022 01:48:54 PM Filed under
HowTos
  • Reducing bias of networking A/B tests

    My colleagues and I at Stanford University and Netflix, recently published a paper at the Internet Measurement Conference 2021 (and which was one of the recipients of this year’s Applied Networking Research Prize) that showed how A/B tests can have extremely biased results when run over congested networks. We showed experiments where even the direction of the result is switched — a treatment that performs poorly in an A/B test could perform well when deployed, and vice versa.

  • The future (and history) of IPSec

    These can be used to either protect IP directly or in a ‘tunnelled’ mode. Tunnelled mode is most like the virtual private network widely used by enterprises in the global Internet.

  • Open DNS resolvers, from bad to worse

    This prompted my colleagues and me at the University of Twente to think of how to further shrink the surface for abuse of open resolvers during DDoS attacks, specifically the amplification power. We recently experimented with open resolvers to identify amplification power diversities that we intuitively expected among open resolvers in the IPv4 address space. Among our findings, we found that we can reduce the overall potential of such attacks by 80% if we patch around 20% of the most potent amplifiers.

  • Linux Accessibility: an unmaintained Mess

    This article was written so that focus can be brought to the accessibility of the Linux desktop. As Raspberry Pi computers become more prevalent in schools, I want blind students to be able to enjoy learning to code, manage systems, and explore computing. I want blind people to be able to grow up learning about computers to the point that, when they’re in their early 20s, they can build apps, make emulation layers for older systems, or automate their jobs. I want blind kids to have the opportunities I didn’t have. Furthermore, I want them to be able to learn Python, not Quorum. I want them to learn the innards of Linux, not to have to fight Windows for every advanced setting or change. And if a blind person is tired of their blind-specific job, I want them to be able to easily learn to be a system administrator by administering their own Linux system.

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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.

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  • 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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