yubikey login linux

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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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    https://www.yubico.com/works-with-yubikey/catalog/linux/

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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    http://allthesystems.com/2020/09/yubikey-kubuntu-linux-2-factor-login-and-sudo/

Ubuntu Linux Login Guide - U2F - Yubico

    https://support.yubico.com/hc/en-us/articles/360016649099-Ubuntu-Linux-Login-Guide-U2F
    4.3 Configuring the System to require the YubiKey for TTY terminal Open Terminal. run: sudo nano /etc/pam.d/login Add the line below after the "@include common-auth" line. auth required pam_u2f.so Press Ctrl+X and then Enter to save and close the file. Success! You will no longer be able to log in to the computer without the U2F device.
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Login via Yubikey on Linux (HMAC) - shibumi.dev

    https://shibumi.dev/posts/login-via-yubikey-on-linux-hmac/
    Login via Yubikey on Linux (HMAC) In this small article I want to explain how to use your Yubikey as 2-factor device for logins on Linux. I used the "Yubikey 5" for this article. If you use an older one, some option will maybe not work.
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    https://shibumi.dev/posts/login-via-yubikey-on-linux-hmac/

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. The problem was that I couldn't see the state for the HMAC challenge. Watching the state (shall I press a button now to activate the ...
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    https://shibumi.dev/posts/login-via-yubikey-on-linux-u2f/

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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    https://bash-prompt.net/guides/bash-ssh-yubikey/

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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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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    https://askubuntu.com/questions/1167691/passwordless-login-with-yubikey-5-nfc

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
    1 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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    https://unix.stackexchange.com/questions/566870/setting-up-a-passwordless-login-with-a-u2f-token-yubikey-5

Using a Yubikey as a touchless, magic unlock key for Linux ...

    https://kliu.io/post/yubico-magic-unlock/
    Similar examples for Linux include pamusb, which allows you to login using Linux's PAM by inserting a specially-formatted USB stick. Of course, nowadays most people use Yubikeys to accomplish this, and Yubico has convenient guides on how to accomplish this very task.
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    https://kliu.io/post/yubico-magic-unlock/

Yubikey Bio Reviewed (GitHub Auth & Linux Login ...

    https://www.gadgetoid.com/2021/12/05/yubikey-bio-reviewed-github-auth-linux-login/
    Enter your PIN and touch your Yubikey. This will create ~/.ssh/yubikey_bio (your private key) and ~/.ssh/yubikey_bio.pub (your public key). To add your new key to SSH you can then run: ssh-add -K And enter your PIN. This, you might notice, is a lot easier to type and remember than the wordy pkcs11 method.
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    https://www.gadgetoid.com/2021/12/05/yubikey-bio-reviewed-github-auth-linux-login/

YubiKey - ArchWiki - Arch Linux

    https://wiki.archlinux.org/title/YubiKey
    The YubiKey takes inputs in the form of API calls over USB and button presses. The button is very sensitive. Depending on the context, touching it does one of these things: 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.
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    https://wiki.archlinux.org/title/YubiKey

Complete U2F Yubikey Linux Mint 20 Login with Encrypted ...

    https://blog.rtwm.io/2021/03/complete-u2f-yubikey-linux-mint-20-login-with-encrypted-home-folders/
    A password ANDa Yubikey will be needed to login. (This is U2F). Something you know, and something you have possession of. However, if you do not have one of the Yubikeys associated with the system, you will be unable to login without making changes to your system from a rescue media boot disk.
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    https://blog.rtwm.io/2021/03/complete-u2f-yubikey-linux-mint-20-login-with-encrypted-home-folders/

HŌRU | Sign in to Linux from Windows via Yubikey

    https://horugame.com/sign-in-to-linux-from-windows-via-yubikey/
    Now to make your Linux server aware of your new keys! gpg --export-ssh-key This will print out the public key in SSH format Log in to your Linux server Insert the above SSH public key into your ~/.ssh/authorized_keys file and save it Restart your Windows PC! Now's the time to test it all out!
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    https://horugame.com/sign-in-to-linux-from-windows-via-yubikey/

WebAuthn Web Authentication with YubiKey 5 | Linux Journal

    https://www.linuxjournal.com/content/webauthn-web-authentication-yubikey-5
    The YubiKey 5 series supports a broad range of two-factor and multi-factor authentication protocols, including: Challenge-response (HMAC-SHA1 and Yubico OTP). Client to Authenticator Protocol (CTAP). FIDO Universal 2nd-Factor authentication (U2F). FIDO2. Open Authorization, HMAC-Based One-Time Password (OATH-HOTP).
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    https://www.linuxjournal.com/content/webauthn-web-authentication-yubikey-5

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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    https://forum.manjaro.org/t/system-authentication-with-yubikey/33786

YubiKey and SSH via PAM

    https://developers.yubico.com/yubico-pam/YubiKey_and_SSH_via_PAM.html
    In Administrative level, system administrators hold right to configure the user and YubiKey token ID mapping. Administrators can achieve this by creating a new file that contains information about the username and the corresponding IDs of YubiKey (s) assigned.
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    https://developers.yubico.com/yubico-pam/YubiKey_and_SSH_via_PAM.html

Use a Yubikey remotely over RDP - Queenside Castle

    https://queensidecastle.com/guides/use-a-yubikey-remotely-over-rdp
    Using the Yubikey Remotely Permalink. Once we've done all of the setup the only thing left to do is to start a remote desktop session with device redirection enabled. Go to the "Local Resources" tab of the RDP client settings and click "More…" under "Local devices and resources". You should now see "Other supported RemoteFX ...
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    https://queensidecastle.com/guides/use-a-yubikey-remotely-over-rdp

How to use a Yubikey on Linux with an encrypted drive ...

    https://www.techrepublic.com/article/how-to-use-a-yubikey-on-linux-with-an-encrypted-drive/
    How to use a Yubikey on Linux with an encrypted drive Looking to use a Yubikey for added security on your encrypted Linux drives? With a few quick commands, you'll enjoy that added layer of security.
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    https://www.techrepublic.com/article/how-to-use-a-yubikey-on-linux-with-an-encrypted-drive/

SSH authentication - Yubico

    https://developers.yubico.com/PGP/SSH_authentication/
    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.
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    https://developers.yubico.com/PGP/SSH_authentication/

Using a U2F Yubikey with Linux Mint 19 Tara - Abort, Retry ...

    https://www.abort-retry-fail.com/2018/09/29/using-a-u2f-yubikey-with-linux-mint-19-tara/
    To set up your Linux system for YubiKey U2F go to GitHub and download the 70-u2f.rules file. See below for a copy of this file: Create a copy of the file called 70-u3f.rules into the Linux directory /etc/udev/rules.d . if the file is already there, ensure that the content looks like the one provided. Reboot your system to apply the changes.
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    https://www.abort-retry-fail.com/2018/09/29/using-a-u2f-yubikey-with-linux-mint-19-tara/

Using Yubikeys with Fedora - Fedora Project Wiki

    https://fedoraproject.org/wiki/Using_Yubikeys_with_Fedora
    Using a yubikey for more than login We have configured the yubikey to be used in regular logins, but many users would like to use their yubikeys for tasks such as ssh and root elevation. In order to accomplish this, we must copy the pam_yubico.so line we've written into the other PAM modules we wish to integrate with.
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    https://fedoraproject.org/wiki/Using_Yubikeys_with_Fedora

YubiKey for SSH, Login, 2FA, GPG and Git Signing

    https://ocramius.github.io/blog/yubikey-for-ssh-gpg-git-and-local-login/
    CAUTION: Each YubiKey with an authentication gpg sub-key will produce a different public SSH key: we will need to seed our server with all the SSH public keys. TIP: consider using the YubiKey identifier (written on the back of the device) as the comment for the public SSH key, before storing it.
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    https://ocramius.github.io/blog/yubikey-for-ssh-gpg-git-and-local-login/

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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    https://www.hypr.com/fido2-passwordless-yubikey-login/

Yubikey, LUKS and Kali Linux - GitHub

    https://github.com/dmitryd/kali-yubikey
    So if anybody can save the key in some way, it can unlock LUKS partition without yubikey. I came across the experimental project for Gentoo Linux to change LUKS key after each login. But Gentoo Linux is very different from Kali (Kali is based on Debian) and it has completely different way to initialize kernel and unlock encrypted drives.
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