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 blog.josefsson.org
Unattended SSH with Smartcard - Simon Josefsson's blog
| | cryptsus.com
How to configure OpenSSH with YubiKey Security Keys U2F OTP Authentication on Ubuntu 18.04 - Cryptsus Blog
5.3 parsecs away

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| | How to configure SSH with YubiKey Security Keys U2F OTP Authentication on Ubuntu 18.04
| | florin.myip.org
Easy multifactor authentication for SSH using YubiKey NEO tokens | Florin's blog
3.9 parsecs away

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| | [AI summary] A technical guide explains how to secure SSH private keys using a YubiKey NEO smartcard token to prevent brute-force attacks.
| | golb.hplar.ch
First configuration steps on a new VPS Server
5.8 parsecs away

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| | [AI summary] A comprehensive guide covering the initial setup, security hardening, and configuration of a self-hosted Virtual Private Server using Ubuntu and SSH.
| | sts10.github.io
YubiKey and OpenPGP
18.8 parsecs away

Travel
| On Cyber Monday, I took advantage of Yubico's 2-for-1 YubiKey deal and got two YubiKey 4s for the price on one ($40). My understanding is that usually these keys are used as a 2nd factor in 2-factor authentication schemes. In this capacity it works with Google and Dropbox, as well...