Questions tagged [2-factor-authentication]

Two-factor authentication, also called two-step verification, is a method to add an extra layer of security to an authentication mechanism. In two-factor authentication a user's identity is confirmed by requiring two distinct pieces of evidence from the following categories: knowledge (something they know), possession (something they have), or inherence (something they are).

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freeRadius and google-authenticator: how do i get the qr code on a website?

I need to do a setup which I expected to be very common: Setup freeRadius, google-authenticator with an existing Active Directory to setup 2FA for Horizon View. Show the qr-code generated by google-...
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How to point same application(tomcat) to be used for 1FA and 2FA authentication?

Team, My one application is hosted on tomcat with 2FA, now I want same application to be accessed with 1FA, how do I do it without creating copy of war file or any easy option? e.g. https://myapp1....
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Trouble installing google-authenticator on Ubuntu

I am using Ubuntu 18.04 LTS via AWS EC2 and I am trying to setup Google Authenticator on login. The first thing I did was run sudo apt-get update, then sudo apt-get install libpam-google-...
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Allow Passphrase only **and** Password+Yubikey for single user login

Context I am lazy. But I am also (a bit) concerned with security. So on my machine (running Fedora 31), I want to be able to both: log into my session usign a strong passphrase, log into my session ...
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SSH with priv key and google authenticator and SFTP

I followed a guide on how to setup SSH using private key and google authenticator and it works fine... I disabled Rootaccess, setupup privatekey and the authenticator. Then I was trying to enable ...
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Configure PAM to ask for 2FA token even if password is incorrect

I have Google 2FA set up for ssh password logins. Works fine, but if possible I'd like to tighten a small security hole: if the password given is correct, it will then ask for the 2FA token. If the ...
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How to configure TOTP on Ubuntu?

I am setting up my Ubuntu 18.04.2 LTS desktop. I have used the PAM google-authenticator module before. However now I want to edit which algorithm it uses and how many digits there are, is that ...
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configure ssh to allow login with ssh key (and no google 2FA) or password + google 2FA?

I'd like to configure my (debian) machine to allow ssh logins with two different options for authentication: ssh public key authentication password authentication with a (google) 2 factor ...
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468 views

How can I setup two factor auth (sms) via ssh connection

I am writing a bash script on ubuntu 16.04 and I want to setup Two factor authentification via SMS on SSH connection to the server. I saw that there is a way to do it with a google authentication ...
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Why failing to setup Gmail of 2-step verification phone based in Thunderbird?

It work previously but not anymore in Fig. 1. I tried 5 times. It went through the normal Google 2-step verification process, but when returning to the main window, it gives the result in Fig. 1. I ...
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SSH - Only require google-authenticator from outside local network

Running a debian variant (osmc) What I'm trying to do: Disable ssh through password, requiring both key and google authenticator; That's all working But now I'm trying to only require the 2 factor ...
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luks - is there 2-factor authentication

Is there anyway to achieve 2-factor authentication with luks so that if a key is compromised, if the other part is not in hand, the data is still secure?
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i3 - locking screen with 2-factor authentication

I'm running i3 window manager and have 2-factor authentication on my system. It appears that i3 and i3lock do NOT support the additional prompt for 2-factor authentication, but merely pipes the ...
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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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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 ...