How to Set Up Two-Factor Authentication in Ubuntu

SSH access to the server using an SSH key.

1. Install PAM module. Log in to your Ubuntu server as a non-root user with sudo access. ...
2. Generate Your 2FA Code. Note: Each user connecting to the server will perform these steps. ...
3. Configure SSH. ...
4. Configure 2FA for Sudo. ...
5. Recover From a 2FA Lockout.

1. How do I install Google Authenticator on Ubuntu?
2. How do I setup my Nintendo 2 factor authentication?
3. How do I use Google Authenticator?
4. How do I install Google Authenticator on Linux?
5. How do I setup a two step verification?
6. How do I get my Google Authenticator code on my new phone?
7. How do I restore my Google Authenticator code to my new phone?
8. How do I set up Microsoft authenticator on my new phone?
9. How do I use Microsoft authenticator on my new phone?
10. How do I set up two factor authentication on my Microsoft account?
11. Can I have Google Authenticator on two devices?
12. What if I lost my phone with Google Authenticator?
13. How do I get the QR code for Authenticator app?

How do I install Google Authenticator on Ubuntu?

Overview. The Google Authenticator package can be installed on Ubuntu via apt-get on Ubuntu 14.04. 3 and later (that I've confirmed). It provides a pam module that allows you to prompt a user for a code generated via a Google Authenticator app or other compatible TOTP app (such as 1Password).

How do I setup my Nintendo 2 factor authentication?

Complete these steps

1. Go to the Nintendo Account website and sign in to your Nintendo Account.
2. Select Sign-in and security settings, then scroll down to 2-Step Verification and click Edit.
3. Click 2-Step Verification settings.
4. Click Send email to have a verification code sent to the email address on file.

How do I use Google Authenticator?

Log into your google account. Under "Security and Sign-In" select "Two-Step Verification," and then scroll down to select the "Authenticator app" option. 3. Select your phone, Android or iPhone.

How do I install Google Authenticator on Linux?

Log into your Linux machine and follow these steps:

1. Open a terminal window.
2. Issue the command sudo apt install libpam-google-authenticator.
3. Type your sudo password and hit Enter.
4. If prompted, type y and hit Enter.
5. Allow the installation to complete.

How do I setup a two step verification?

Go to https://accounts.nintendo.com and sign in to your Nintendo Account.

1. Select "Sign-in and security settings", then scroll down to "Two-Step Verification" and click "Edit".
2. Click "Enable two-step verification".
3. Click "Submit" to have a verification code sent to the email address shown.

How do I get my Google Authenticator code on my new phone?

Open the Authenticator app on your new phone and tap Begin > Scan barcode. Scan the QR code displayed on Google's website with the Authenticator app, then enter the six-digit code to verify everything is working properly. Once that's done, the codes on your old device will no longer be valid.

How do I restore my Google Authenticator code to my new phone?

Open Google's 2-Step Verification page in a browser and log into your Google account when it asks you. In the “Authenticator app” section of the page, click “Change Phone.” Choose the kind of phone you are migrating to and click “Next.” You should now see the “Set up Authenticator” screen, complete with barcode.

How do I set up Microsoft authenticator on my new phone?

Add account to Microsoft Authenticator

1. Open the Microsoft Authenticator app on your phone.
2. Tap the + > Work or school account.
3. Use your phone to scan the QR square that is on your computer screen. Notes: ...
4. Your account will be added automatically to the app and will display a six-digit code.

How do I use Microsoft authenticator on my new phone?

Tap the three vertical dots at the top right, and then tap “Settings.” In the “Backup” section, toggle-On “Cloud Backup” on an Android phone, or “iCloud Backup” on an iPhone. Your accounts will then be backed up to the Microsoft account you used when you first set up Microsoft Authenticator.

How do I set up two factor authentication on my Microsoft account?

To turn two-step verification on or off: Go to Security settings and sign in with your Microsoft account. Under the Two-step verification section, choose Set up two-step verification to turn it on, or choose Turn off two-step verification to turn it off. Follow the instructions.

Can I have Google Authenticator on two devices?

You can set up Google Authenticator so that you can generate verification codes from more than one device. Make sure that you have Google Authenticator downloaded on all devices that you want to use.

What if I lost my phone with Google Authenticator?

What if I lose my phone with Google Authenticator on it?

1. Save your Backup Codes.
2. Print Your QR Codes.
3. Print or Save the Key.
4. Reset Authenticator App using Change Phone option.
5. Change your Google Account Password.
6. Revoke your App Passwords.

How do I get the QR code for Authenticator app?

Regenerate QR code for my microsoft authenticator

1. Go to Security & Privacy page > choose Additional security verification > Update my phone numbers used for account security.
2. After that it will open a new window. ...
3. Choose Set up Authenticator app and it will open a pop-up box with QR code so that you can configure the app on your new device.