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Security Leftovers

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Security
  • Open-source security tools for cloud and container applications

    The use of containers is becoming increasingly popular, and container security is more critical than ever. Luckily, there are various tools that can help keep your business safe! This article covers some popular open-source tools that your DevOps team can use to secure your container environment.

    As the use of containers is becoming more popular and streamlined, the security aspects related to containers have also become more critical for businesses. Containerization has particular structural and operational elements that need special attention. The architectural differences like a shared kernel for containers demand a different security approach altogether, in comparison to traditional security approaches. This makes it very important to understand and perform container-specific security scanning at the earlier stages of the build process. To meet these dynamic requirements of the DevOps teams, several open-source security tools are available in the market. This article covers some popular open-source security tools your DevOps teams can use to ensure the security of your container environment.

  • Top 5 Open Source Serverless Security Tools

    The growing popularity of serverless architecture has led to its massive adoption. My organization has jumped on the serverless bandwagon and it lives up to expectations. The advantages have been tremendous—we have more time to focus on the development, marketing and deployment of the software now that we need not spend much time on infrastructure maintenance.

  • How technical debt is risking your security

    Everyone knows they shouldn't take shortcuts, especially in their work, and yet everyone does. Sometimes it doesn't matter, but when it comes to code development, though, it definitely does.

    As any experienced programmer knows, building your code the quick and dirty way soon leads to problems down the line. These issues might not be disastrous, but they incur a small penalty every time you want to develop your code further.

    This is the basic idea behind technical debt, a term first coined by well-known programmer Ward Cunningham. Technical debt is a metaphor that explains the long-term burden developers and software teams incur when taking shortcuts, and has become a popular way to think about the extra effort that we have to do in future development because of the quick and dirty design choice.

  • Linux Developers Discuss Flushing L1 Cache On Context Switches In Light Of Vulnerabilities

    In light of data sampling vulnerabilities like MDS, engineers from Amazon, Google, and other organizations are discussing a proof-of-concept implementation that would optionally flush the L1 data cache on context switches.

    Flushing out the L1 data cache on each context switch would result in yet another performance hit so it isn't being taken lightly. At least based upon public information at this point doesn't appear necessary but an extra step to enhance the system security following Intel's data sampling vulnerability disclosures. The "request for comments" patch by an Amazon engineer describes it as an optional feature for those that are "paranoid due to the recent snoop assisted data sampling vulnerabilites, to flush their L1D on being switched out. This protects their data from being snooped or leaked via side channels after the task has context switched out."

    The discussed means are ensuring data left in the L1d would be cleared out and a second avenue being explored is clearing the L1 cache should any untrusted (potentially malicious) process be starting up so to clear out the L1 cache before hand.

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.