<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="4.3.2">Jekyll</generator><link href="https://221b.uk/feed.xml" rel="self" type="application/atom+xml" /><link href="https://221b.uk/" rel="alternate" type="text/html" /><updated>2026-08-05T21:56:47+00:00</updated><id>https://221b.uk/feed.xml</id><title type="html">221b</title><subtitle>Deconstruct. Understand. Compose.</subtitle><author><name>w4tsn</name><email>a.wellbrock@mailbox.org</email></author><entry><title type="html">How to set a FIDO2 PIN on the SoloKey v2</title><link href="https://221b.uk/how-to-set-a-pin-on-solokey-v2" rel="alternate" type="text/html" title="How to set a FIDO2 PIN on the SoloKey v2" /><published>2023-03-23T00:00:00+00:00</published><updated>2023-03-23T00:00:00+00:00</updated><id>https://221b.uk/how-to-set-a-pin-on-solokey-v2</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="hwtoken" /><summary type="html"><![CDATA[Officially a FIDO2 device exposes APIs to change the device PIN with fido2-tools. As it turns out this is broken in the SoloKey 2 firmware.]]></summary></entry><entry><title type="html">GNOME keyring unlock when using password-less login to Fedora Linux Workstation</title><link href="https://221b.uk/gnome-login-using-u2f-security-tokens" rel="alternate" type="text/html" title="GNOME keyring unlock when using password-less login to Fedora Linux Workstation" /><published>2023-03-19T00:00:00+00:00</published><updated>2023-03-19T00:00:00+00:00</updated><id>https://221b.uk/gnome-login-using-u2f-security-tokens</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="hwtokens" /><summary type="html"><![CDATA[While I detailed how to use the YubiKey security token for a variety of things I want to revisit hardware token usage as login factor for GNOME sessions as those pose an additional challenge.]]></summary></entry><entry><title type="html">OpenSSH key management with YubiKey PIV and FIDO2</title><link href="https://221b.uk/openssh-key-management-with-yubikey" rel="alternate" type="text/html" title="OpenSSH key management with YubiKey PIV and FIDO2" /><published>2023-03-02T00:00:00+00:00</published><updated>2023-03-02T00:00:00+00:00</updated><id>https://221b.uk/openssh-key-management-with-yubikey</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="hwtoken" /><summary type="html"><![CDATA[The YubiKey has two features to make it a storage for OpenSSH private and public keys: PIV and FIDO2. Let's have a look how that works.]]></summary></entry><entry><title type="html">Maintaining a staging environment with nightly Btrfs snapshots</title><link href="https://221b.uk/staging-environment-through-btrfs-snapshots-and-systemd-units" rel="alternate" type="text/html" title="Maintaining a staging environment with nightly Btrfs snapshots" /><published>2023-02-28T00:00:00+00:00</published><updated>2023-02-28T00:00:00+00:00</updated><id>https://221b.uk/staging-environment-through-btrfs-snapshots-and-systemd-units</id><author><name>w4tsn</name></author><category term="posts" /><category term="btrfs" /><category term="systemd" /><summary type="html"><![CDATA[All servers in my infrastructure run Btrfs that is used to provide nightly snapshots and operate staging service instances based on them.]]></summary></entry><entry><title type="html">Using a YubiKey for authentication at a Fedora Linux Workstation</title><link href="https://221b.uk/using-yubikey-as-factor-in-linux-pam" rel="alternate" type="text/html" title="Using a YubiKey for authentication at a Fedora Linux Workstation" /><published>2023-02-26T00:00:00+00:00</published><updated>2023-02-26T00:00:00+00:00</updated><id>https://221b.uk/using-yubikey-as-factor-in-linux-pam</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="hwtoken" /><summary type="html"><![CDATA[Let me tell you how to configure a YubiKey 5C NFC and Linux PAM to authenticate in all cases PAM is used and you'd like to use a YubiKey.]]></summary></entry><entry><title type="html">Exploring the use of YubiKeys in Fedora Linux</title><link href="https://221b.uk/exploring-use-of-yubikeys-in-fedora-linux" rel="alternate" type="text/html" title="Exploring the use of YubiKeys in Fedora Linux" /><published>2023-02-25T00:00:00+00:00</published><updated>2023-02-25T00:00:00+00:00</updated><id>https://221b.uk/exploring-use-of-yubikeys-in-fedora-linux</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="hwtoken" /><summary type="html"><![CDATA[I'm exploring the applications of a YubiKey in my day-to-day life using Fedora Linux]]></summary></entry><entry><title type="html">Safe automatic decryption of LUKS partition using TPM2</title><link href="https://221b.uk/safe-automatic-decryption-luks-partition-tpm2" rel="alternate" type="text/html" title="Safe automatic decryption of LUKS partition using TPM2" /><published>2023-01-23T00:00:00+00:00</published><updated>2023-01-23T00:00:00+00:00</updated><id>https://221b.uk/safe-automatic-decryption-luks-partition-tpm2</id><author><name>w4tsn</name></author><category term="posts" /><category term="fedora" /><category term="luks" /><summary type="html"><![CDATA[In this article I demonstrate and explain how to safely decrypt a LUKS encrypted disk automatically using a TPM2 chip, the clevis package and initramfs.]]></summary></entry><entry><title type="html">I’ll shave that Yak as soon as I finish… ah, damn.</title><link href="https://221b.uk/yak-shaving-meta-post" rel="alternate" type="text/html" title="I’ll shave that Yak as soon as I finish… ah, damn." /><published>2023-01-01T00:00:00+00:00</published><updated>2023-01-01T00:00:00+00:00</updated><id>https://221b.uk/yak-shaving-meta-post</id><author><name>w4tsn</name></author><category term="posts" /><category term="meta" /><summary type="html"><![CDATA[A short meta post about itself and what lead to it's creation.]]></summary></entry><entry><title type="html">The conjunction of spheres</title><link href="https://221b.uk/conjunction-of-spheres" rel="alternate" type="text/html" title="The conjunction of spheres" /><published>2022-12-28T00:00:00+00:00</published><updated>2022-12-28T00:00:00+00:00</updated><id>https://221b.uk/conjunction-of-spheres</id><author><name>w4tsn</name></author><category term="posts" /><category term="meta" /><summary type="html"><![CDATA[I'm merging my two blogs (and other ideas) into one, allowing a bit of chaos to set my mind free.]]></summary></entry><entry><title type="html">FOSS Report 2021.11</title><link href="https://221b.uk/foss-report-2021-11" rel="alternate" type="text/html" title="FOSS Report 2021.11" /><published>2021-11-30T00:00:00+00:00</published><updated>2021-11-30T00:00:00+00:00</updated><id>https://221b.uk/foss-report-2021-11</id><author><name>w4tsn</name></author><category term="posts" /><category term="report" /><summary type="html"><![CDATA[Résumé of my FOSS related work in November 2021]]></summary></entry></feed>