When logging in to your account, a safe way is to log in to the account on the same computer or mobile phone through the same browser. If you frequently sign in to your account on different devices through different browsers, your account activity may be considered suspicious and the service provider will disable your account.
Before you begin this guide you’ll need the following: 1. One Ubuntu 18.04 server or desktop environment. If you are using an Ubuntu server, set it up by following the Ubuntu 18.04 initial server setupguide, including a non-root user with sudo privileges and a firewall. 2. An authenticator application installed on your mobile device, with which you can scan 2FA QR codes, such as Google Authenticator or Authy.
Estimated Reading Time: 10 mins
Published: Mar 01, 2019
Feb 24, 2021 · Ubuntu Login Password Step 4: Integrate SSH with Google Authenticator. If you intend to use SSH with the Google PAM module, you need to integrate the two. There are two ways you can achieve this. For SSH password Authentication. To enable SSH password authentication for a regular user, first, open the default SSH configuration file.
Touch the Add icon (+) and select “Enter a provided key”. Enter a name that you will recognise as being your 2FA method for SSH, then type the secret key provided by google-authenticator command.
Sep 02, 2020 · Public/private SSH keys are required for login, and 2FA will be enabled. Edit your SSH PAM configuration file. $ sudo nano /etc/pam.d/sshd Add the following line to the bottom of the file. The nullok option allows users that have not yet generated a 2FA code to log in, while codes are required if the user has followed Step 2 above. This option is useful during rollout.
Oct 02, 2017 · Ubuntu is also available for tablets and smartphones, with the Ubuntu Touch edition. Two-factor authentication (also known as 2FA) is a method of confirming a user’s claimed identity by utilizing a combination of two different components. Two-factor …
Jul 02, 2018 · The best way to enable 2FA authentication is through the Google Authenticator app that is available for mobile phones. This app allows you to receive a code that you should enter on your Ubuntu 18.04 alongside your username and password to prove your identity.
Jul 06, 2020 · Two-factor authentication (2FA) requires you to enter two pieces of information in order to login. So you will also need to enter a time-based one-time password to log in to your SSH server. This one-time password is computed using the TOTP algorithm , which is an IETF standard.
Apr 14, 2015 · Note: Once you have activated the 2-factor authentication for a user and haven’t set the same for root, you will never be able to Login as root directly. In such a case a way around is to use any other sudo user for whom we have it setup and then use sudo su – to switch to the root user.
Apr 19, 2021 · Duo Unix – Two-Factor Authentication for SSH (login_duo) Duo can be easily added to any Unix system to protect remote (SSH) logins with the addition of a simple login_duo module. It has been tested on Linux (RedHat, Fedora, CentOS, Debian, Ubuntu, Amazon Linux), BSD (FreeBSD, NetBSD, OpenBSD), Solaris, and AIX.
Sep 23, 2020 · Ubuntu Linux Login Guide – U2F Clay Degruchy Created September 23, 2020 13:13 – Updated May 19, 2021 17:43. Note: Although this guide does not cover configuring pam-u2f to require PIN authentication, note that there is a logic issue in pam-u2f 1.1.0 that, depending on the configuration and the application used, could lead to a local PIN bypass …