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today's howtos

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HowTos

  • How to Resolve "Temporary failure in name resolution" Issue

    Sometimes when you try to ping a website, update a system or perform any task that requires an active internet connection, you may get the error message ‘temporary failure in name resolution’ on your terminal.

     

  • How to install latest LibreOffice version on Debian 10

    LibreOffice is a free and open-source office-suite productivity software. It is a free alternative for Microsoft Office. It has applications for database management, spreadsheets, presentations, word processor, and graphic editing. It runs on Linux, macOS, and Microsoft Windows. Since the LibreOffice has multiple versions. The current versions are 6.3.x and 6.4.x. For this particular article, I am going to install the latest LibreOffice version 6.4.

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  • Fail2ban on Linux: An Internet Security and Utility Tool for Server Admin

    Fail2ban is an internet security utility tool for Linux server and web-host admins. You can use the Fail2ban tool to control, monitor, and add rules on your Linux server. Suppose you have a website on any hosting platform.

    [...]

    But, definitely, the Fail2ban can reduce the number of DDOS attacks on your Linux server. Once you install the Fail2ban tool on your Linux server and set the parameters, it can automatically protect your server from login attacks.

    Fail2ban uses the Jail script to make the Linux server secure. Jail is the settings script file, where all the default IP blocking and maintaining parameters are set. Understanding the Jail script is essential to ensure the security of your Linux server.

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  • How to Switch Kernels on Arch Linux

    One of the reasons why people use Arch Linux is that it is a bleeding edge rolling release. You get most software and the Linux kernel before users of other distributions.

    But this doesn’t mean that you have to always use the latest mainline kernel. There are several kernel options available, and I am going to show you switch kernels in Arch Linux.

  • Cryptographic Signing using ssh-keygen(1) with a FIDO Authenticator

    Hitherto, releases of the fwobac software (which underlies Undeadly) have been unsigned. This is overdue for change, so for the latest release [version 1.7], we are providing a digital signature. As signing is being performed manually, why not employ an additional [hardware] factor?

    signify(1) does not support the use of FIDO authenticators. However, recent versions of OpenSSH do support signing using the [under-appreciated] -Y sign option of ssh-keygen(1), and with the recent addition of FIDO authenticator support to OpenSSH [as reported previously], we have a means (using tools in base OpenBSD) of using a hardware factor when signing files.

More in Tux Machines

Firefox 82 is Out with New Sync Options, Malicious Download Blocking

Firefox 82 is due for formal release later today (October 20) but as that tend to happen when I’m in bed I’m posting this post a tiny bit early. Firefox 82 downloads are up on the release server. Indeed, feature development for Firefox seems to be slowing down in general — Mozilla did recently sack a sizeable chunk of the brower’s development team — but a welcome round of enhancements and changes are available through this uplift. Read more

Ubuntu and Debian Get Patches for Bluetooth Remote Code Execution Flaws, Update Now

Discovered by security researcher Andy Nguyen in Linux kernel's Bluetooth L2CAP and Bluetooth A2MP implementation, as well as the Bluetooth HCI event packet parser, the CVE-2020-12351, CVE-2020-12352, and CVE-2020-24490 vulnerabilities are affecting Debian GNU/Linux 10, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. While CVE-2020-12351 and CVE-2020-24490 could allow a physically proximate remote attacker to crash the system by causing a denial of service or execute arbitrary code, CVE-2020-12352 let physically proximate remote attackers to expose sensitive information (kernel memory). Read more

Graphics: Intel, AMD and Vulkan

  • Intel Lands A Hefty Tiger Lake Graphics Optimization - Phoronix

    From my Tiger Lake testing so far with the Core i7 1165G7, the "Gen12" Xe Graphics have been quite compelling with a very nice upgrade over Gen11 and especially obvious win over the very common still Gen9 graphics. With Mesa 20.3, another measurable performance is on the way for the Intel Vulkan driver with Tiger Lake. For Tiger Lake (and theoretically Rocket Lake as well), a new and significant optimization landed today in Mesa 20.3-devel. The optimization applies for Intel Gen12 graphics except for discrete/DG1 graphics.

  • Vulkan Specification Version 1.2.158 Brings Two New Extensions

    Version 1.2.158 of the Vulkan specification introduces VK_KHR_fragment_shading_rate that lets developers change the rate at which fragments are shaded on a per-region, per-primitive or per-draw basis and VK_KHR_shader_terminate_invocation which, together with the previously introduced VK_EXT_shader_demote_to_helper_invocation extension, lets developers do a much more specific OpKill.

  • Open-Source RADV Vulkan Driver Is Seeing Work To Allow Building It On Windows - Phoronix

    An independent party has slowly begun merging patches into mainline Mesa for allowing the open-source Radeon Vulkan driver "RADV" to build on Microsoft Windows. AMD is not behind this effort nor Valve but has been worked on in recent months for making Mesa's Radeon Vulkan driver code compatible with Windows. James Park of a little known "Lag Free Games" has been behind this initiative to bringing it to Windows and seemingly only explaining in private to upstream Mesa developers his motivations for doing so. RADV as a reminder is the Mesa Radeon Vulkan driver started out by David Airlie of Red Hat and Bas Nieuwenhuizen of Google in the time while waiting for AMD to open-source their Vulkan driver. AMD ultimately provided "AMDVLK" as their official open-source Vulkan driver derived from their internal Vulkan driver sources and built against the AMDGPU LLVM compiler back-end.

Today in Techrights