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today's leftovers

Submitted by Roy Schestowitz on Saturday 18th of June 2022 10:20:50 AM Filed under
Misc
  • Pulling MikroTik into the Limelight

    So, you want to start reverse engineering MikroTik routers. Where do you start? As opposed to many routers which act more as a collection of independent binaries for each service, MikroTik devices implement a system of interconnected binaries which perform tasks for one another. Unfortunately, there is limited publicly available information about how this system-wide implementation works, and the good, technical information available is now a few years old. In that time, MikroTik released a number of minor version updates and one major revision software upgrade, making some of the technical details obsolete.

    Consequently, we are left generally in the dark as to how MikroTik works, and digging into its dense, hand-rolled C++ binaries filled with custom library calls is a daunting task.

    This blog post, which overviews our presentation at REcon 2022, outlines key knowledge and introduces tools that we created during our research over the past handful of months.

  • A conceptual primer on the single transferable vote – 6: Meek method

    In part 5, we presented the weighted inclusive Gregory method. In that part and all previous parts, during the distribution of preferences we have ‘skipped over’ any candidates who have already been elected, as we said that to give extra votes to any of those candidates would be a waste.

    While it is true that to leave a candidate with more votes than the quota, while there are vacancies still to fill, would be wasteful, there is another option we could have taken, rather than skipping those preferences completely.

  • Amend 3.4 Released
  • Convergence of DBaaS and BaaS

    When competing against a cloud hyperscaler, a database is an excellent place to start. Low churn (data gravity), expensive products (often not fully utilized), and naturally built-in net dollar retention (databases rarely shrink). A look at two separate but converging spaces of database-as-a-service (DBaaS) and backend-as-a-service (BaaS).

  • How fast can a 6502 transfer memory

    After Gregorio posted this image earlier this week, it sparked a fair amount of discussion on the interwebs about the memory transfer speed of a 6502 processor.

    The 6502 on Commodore machines shares the clock with the video chip. Since dual ported ram wasn't financially feasible at the time, they chose a memory access trick that allowed both the video chip and processor to access memory during a single clock cycle. I think it's the same on most Commodores, but on the VIC-20, the processor accesses the memory on the low part of the signal and the VIC chip on the high part. Maybe that's backward... anyhoo, you get the point.

  • Ibase launches 3.5-inch SBC with Tiger Lake H CPUs, quad-displays and dual GbE

    Ibase released a 3.5” single board computer (SBC) that is powered by the 11th Gen Intel Core processors (Tiger Lake H). The high performance IB956 SBC has quad-displays, dual GbE ports and dual SATA III.

    Ibase’s new SBCs offer support for three models of Intel’s 11th Gen Tiger Lake “H” processor:

  • When Soatok Used Bugcrowd

    Sometimes, when I wanted to report a vulnerability to a product, service, or software project, I would be instructed to disclose my findings through a bug bounty platform such as HackerOne or Bugcrowd. When this happens, I might look around to see if any of the other programs interest me, but they rarely do.

    As a consequence of this conduct, I’ve accrued a few thousand dollars over the years from both platforms. That may sound like a lot of money, but it’s basically a mobile phone bill’s worth of bounty money over 3+ years.

»

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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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