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Linux Security with YubiKey | Yubico
- https://www.yubico.com/works-with-yubikey/catalog/linux/
- YubiKey Standard Product overview Securely log in to your local Linux machine using Yubico OTP (One Time Password), PIV-compatible Smart Card, or Universal 2nd Factor (U2F) with the multi-protocol YubiKey. Users have the flexibility to configure strong single-factor in lieu of a password or hardware-backed two-factor authentication (2FA).
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Ubuntu Linux Login Guide - U2F - Yubico
- https://support.yubico.com/hc/en-us/articles/360016649099-Ubuntu-Linux-Login-Guide-U2F
- This section covers how to require the YubiKey when using the sudo command, which should be used as a test so that you do not lock yourself out of your computer. Open Terminal. Run: sudo nano /etc/pam.d/sudo Add the line below after the "@include common-auth" line. auth required pam_u2f.so Press Ctrl+O and then Enter to save the file.
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Yubikey One-Time Password Authentication | Linux Journal
- https://www.linuxjournal.com/magazine/yubikey-one-time-password-authentication
- Now, all you have to do is enter your e-mail and password as usual, position the cursor in the newly added text field, and put your finger on the Yubikey's button. After a second or so, the Yubikey magically spits out a 44-character sequence followed by a newline character. The newline character causes the form to be submitted.
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Linux Security with YubiKey | Yubico
- https://www.yubico.com/gb/works-with-yubikey/catalog/linux/
- YubiKey Standard Product overview Securely log in to your local Linux machine using Yubico OTP (One Time Password), PIV-compatible Smart Card, or Universal 2nd Factor (U2F) with the multi-protocol YubiKey. Users have the flexibility to configure strong single-factor in lieu of a password or hardware-backed two-factor authentication (2FA).
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Login via Yubikey on Linux (HMAC) - shibumi.dev
- https://shibumi.dev/posts/login-via-yubikey-on-linux-hmac/
- yubico-c. If you have a fresh Yubikey, the second slot or second configuration should be free, but you can verify this with using the following command: $ ykinfo -1 -2 slot1_status: 1 slot2_status: 1. Copy. If both slots show the number 1, both slots are configured. If one of them shows 0, the slot is not configured.
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Sign in to Linux from Windows via Yubikey - HŌRU
- https://horugame.com/sign-in-to-linux-from-windows-via-yubikey/
- Introduction. If you're as excited as me about signing into your Linux server from your Windows machine and completely ditching passwords and private keys stored on your computer in the process then this is the one and true guide for you!I've been wanting to do this ever since I've bought my first two Yubikey NEO keys 4 years ago, but the tutorials on the 'net just weren't working ...
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19.04 - Passwordless login with Yubikey 5 NFC - Ask Ubuntu
- https://askubuntu.com/questions/1167691/passwordless-login-with-yubikey-5-nfc
- Run: pamu2fcfg > ~/.config/Yubico/u2f_keys When your device begins flashing, touch the metal contact to confirm the association. Now configure sudo to use the key when available (password otherwise) by editing the following file sudo nano /etc/pam.d/sudo Add the auth line before the @include auth sufficient pam_u2f.so @include common-auth
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Login via Yubikey on Linux (U2F) - shibumi.dev
- https://shibumi.dev/posts/login-via-yubikey-on-linux-u2f/
- Login via Yubikey on Linux (U2F) I was very happy with my HMAC challenge-response solution for my Yubikey, but when I wanted to configure my i3 status bar to show the current state of the key I ran into issues.
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Yubikey Linux 2 Factor login and Sudo - AllTheSystems
- http://allthesystems.com/2020/09/yubikey-kubuntu-linux-2-factor-login-and-sudo/
- To set the Yubikey to be required for login and well anything that uses common-auth you can add this line to /etc/pam.d/common-auth auth required pam_u2f.so I added it to the end of the file and now my common-auth file looks like this: For me this made the login, lock and sudo all require both my password and my Yubikey.
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Using Your U2F YubiKey with Linux - Yubico
- https://support.yubico.com/hc/en-us/articles/360013708900-Using-Your-U2F-YubiKey-with-Linux
- YubiKey 4 Series To set up your Linux system for U2F: Verify that libu2f-udev is installed on your system. On Debian and its derivatives (Ubuntu, Linux Mint, etc.), check whether libu2f-udev is installed by running dpkg -s libu2f-udev. Install (if not already installed) using sudo apt install libu2f-udev.
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Passwordless logins with Yubikey - GitHub Pages
- https://adl1995.github.io/passwordless-logins-with-yubikey.html
- To achieve logins with Yubikeys we require a PAM configuration. PAM or Pluggable Authentication Modules define the authentication flow for common Linux utilities, such as sudo, su, and passwd. We will override the default authentication flow for the xlock lock manager to allow logins with Yubikey.
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linux mint - Setting up a passwordless login with a U2F ...
- https://unix.stackexchange.com/questions/566870/setting-up-a-passwordless-login-with-a-u2f-token-yubikey-5
- I am trying to set up a passwordless login for Linux Mint 19.3, in order to be able to log in either with a Yubikey token or a password. I followed the instructions from Yubikey website and this thread, but I cannot make it work. Briefly, this is what I did: sudo pamu2fcfg -u `whoami` > /etc/Yubico/u2f_keys
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A Short Guide To Using A Yubikey For SSH Authentication
- https://bash-prompt.net/guides/bash-ssh-yubikey/
- SSH is the default method for systems administrators to log into remote Linus systems. Traditionally, [SSH keys] are secured with a password. This situation can be improved upon by enforcing a second authentication factor - a Yubikey.. After you do this then only someone with both the password and the Yubikey will be able to use the SSH key pair to log into your Linus system.
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Using a Yubikey as a touchless, magic unlock key for Linux ...
- https://kliu.io/post/yubico-magic-unlock/
- On lock, it immediately locks my desktop (by sending a SIGUSR1 to swayidle, the program that manages locking on the Sway window manager) On unlock, it first sees if it can authenticate using pamtester without interaction (when no Yubikey is inserted or if the key is invalid, pamtester asks for a password).
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YubiKey - ArchWiki - Arch Linux
- https://wiki.archlinux.org/title/YubiKey
- Trigger a static password or one-time password (OTP) (Short press for slot 1, long press for slot 2). This is the default behavior, and easy to trigger inadvertently. Confirm / allow a function or access. The LED will illuminate to prompt the user. Insert / eject the smartcard Outputs The YubiKey transforms these inputs into outputs:
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WebAuthn Web Authentication with YubiKey 5 | Linux Journal
- https://www.linuxjournal.com/content/webauthn-web-authentication-yubikey-5
- Web Authentication (WebAuthn). Yubico One-Time Password (OTP). In addition, the entire YubiKey 5 series (with the exception of the U2F/FIDO2-only Security Key model) now supports OpenPGP public key cryptography with RSA key sizes up to 4096 bits. This is a notable bump from the key sizes supported by some earlier models.
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Ubuntu - Passwordless login with Yubikey 5 NFC - iTecTec
- https://itectec.com/ubuntu/ubuntu-passwordless-login-with-yubikey-5-nfc/
- How to enable passwordless login Although you should be careful, the process is easy and straightforward. To make it even easier, I've written this so you can simply cut and paste the following commands into a terminal: sudo apt install libpam-u2f pamu2fcfg | sudo tee /etc/u2f_mappings # (At this point, press the button.
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System Authentication with Yubikey - Manjaro Linux Forum
- https://forum.manjaro.org/t/system-authentication-with-yubikey/33786
- I read that you can use the Yubikey as a second factor for system authentication. So basically if you want to login into your user account or use the sudo command you not only need to provide a passphrase but also have to touch the connected Yubikey. I wanted to set this up and most Arch related instructions boil down to this: Tutorial
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YubiKey and SSH via PAM
- https://developers.yubico.com/yubico-pam/YubiKey_and_SSH_via_PAM.html
- The purpose of this document is to guide readers through the configuration steps to use two factor authentication for SSH using YubiKey. This document assumes that the reader has advanced knowledge and experience in Linux system administration, particularly for how PAM authentication mechanism is configured on a Linux platform.
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Yubikey Authentication on Linux - /dev/random
- https://blog.rootshell.be/2009/03/27/yubikey-authentication-on-linux/
- One converted to provide a static password and the second left as is (to provide one-time passwords). I received my 2nd Yubikey a few days ago (Benny, one more time, thanks!). I started to play with OTP ("One Time Password") and integrated the Yubikey with my Linux laptop.
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SSH login with yubikey using PIV | Random Thoughts
- https://blog.asksven.io/posts/ssh-login-with-yubikey/
- SSH login with yubikey using PIV Introduction This article will take you through setting-up a yubikey to hold your SSH private key. It assumes that you have a PIV-enabled yubikey: PIV, or FIPS 201, is a US government standard.
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SSH authentication - Yubico
- https://developers.yubico.com/PGP/SSH_authentication/
- A YubiKey with OpenPGP can be used for logging in to remote SSH servers. In this setup, the Authentication subkey of an OpenPGP key is used as an SSH key to authenticate against a server. To ensure that the only way to log in is by using your YubiKey we recommend disabling password login on your SSH server. Configuration guides Windows OS X Linux
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How to enable both Passphrase *and* Password+Yubikey as ...
- https://unix.stackexchange.com/questions/550525/how-to-enable-both-passphrase-and-passwordyubikey-as-authentication-method-fo
- Here is the solution strategy I have come up so far: One can create multiple accounts with same UID (cf. Why can I create Users with the same UID) — i.e. both accounts would be the same users from the OS perspective, but we could have a separate authentication method for each (one with passphrase, another with Yubikey + password).Whether it's a good idea is debated.
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FIDO2 Passwordless Yubikey Login | HYPR
- https://www.hypr.com/fido2-passwordless-yubikey-login/
- HYPR's True Passwordless YubiKey Integration provides: Interoperability with YubiKeys, FIDO U2F security keys, and built-in platform authenticators such as Windows Hello. Cross-cloud, cross-platform passwordless login to Windows, MacOS, Linux, and VDI workstations.
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