Questions tagged [fido-u2f]

Fido U2F is an open Universal 2nd Factor (U2F) authentication standard that strengthens two-factor authentication using specialized USB or NFC devices.

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systemd-homed with FIDO2 - Login from tty still possible with password only

I recently tried out systemd-homed and doing that I enrolled my Yubikey as FIDO2 device. When i try to authenticate against the created home via homectl authenticate <user> it correctly ...
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installing security key

I have a security key (specifically a TrustKey g320 with finger print reader) that I would like to use under Linux (Ubuntu 20.04). On one hand, I'd like to use it to authenticate when pushing to ...
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How do I use a yubikey for U2F authentication through a Whonix virtual machine?

I am using a Yubico NFC 5 and the latest version of vmbox and Manjaro Linux, how do I use my Yubikey to login to my Google account on the vm?
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1answer
98 views

how to set different authentication requirements in pam policies for different users or groups?

I'm trying to set up a linux development environment that is both secure and convenient, and after setting up passwordless login and 2-factor authenticated pam_u2f, I had the idea to create different ...
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0answers
45 views

OpenSSH U2F as second factor with fallback to Google Authenticator

We use Google Authenticator for 2FA SSH logins. It's configured in /etc/pam.d/sshd as follows: @include common-password auth required pam_google_authenticator.so nullok As you may know, OpenSSH 8.2 ...
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1answer
504 views

U2F/FIDO forwarding over SSH

Is there any mechanism to forward access to a U2F/FIDO security key (such as a Yubikey) over SSH? I'd like to be able to use my local security key to authorize sudo access on a remote host.
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1answer
881 views

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 ...
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2answers
1k views

How to unlock Gnome Keyring after passwordless login with Solokey (Yubiko)?

I experimented on a Ubuntu 19.04 system a bit and took a look here: https://schulz.dk/2019/08/23/using-solokey-for-linux-login/ and here: https://wiki.gnome.org/Projects/GnomeKeyring/Pam#...
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0answers
815 views

How to generate OTP codes offline by Security Key in Debian?

Assume you need the OTPs by devices which are separate from the Debian system which generates the codes. Here, the U2F does not work in all cases so I need OTPs. I am trying to add offline OTP ...
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1answer
721 views

How to use Security Key in NordVPN login?

Situation: static password file in NordVPN settings Proposal: any security key but proposed one, YubiKey, because big userbase I heard that you can setup Security key (Fido U2F) with VPN in ...
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1answer
735 views

How to add Security Key with Button in Debian?

I am trying to add a security key with button (Fido U2F) in Debian. I think the problem may be with the button because of my previous experience with such buttons in Transcend HDDs where no good ...
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2answers
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How to 2-step authenticate by password + U2F Yubikey in Linux KeePassX?

I would like to have 2-step authentication by password + Fido U2F security key. I did not find any approaches which would work in Debian 8.7. The OS should not be a limiting factor here because Qt ...
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4answers
4k views

How to use YubiKeys with SSH keys in 2-step verification?

I can setup SSH keypair without Fido U2F as described SSH-agent working over many servers without retyping? Some flag? in the thread. Two step verification would be very good: password for the ...