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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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
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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
251 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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0answers
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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
707 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 ...
2
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1answer
537 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
632 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
1k views

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
3k 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 ...