This tutorial describes how to set up two-factor authentication for an SSH server by integrating Google Authenticator with OpenSSH. Install Google Authenticator on Linux The first step is to install Google Authenticator on your Linux host. You can do this by running the following command: sudo apt-get install google-authenticator Configure Google Authenticator Once installed, you can configure Google Authenticator by running the following command: google-authenticator You will be prompted to enter a secret key. Make a note of this key, as you will need it later. Configure OpenSSH To configure OpenSSH to use Google Authenticator, you need to create a new file in the /etc/pam.d directory. You can do this by running the following command: sudo nano /etc/pam.d/sshd Add the following lines to the end of the file: auth required pam_google_authenticator.so Save and close the file. Then, restart the SSH server by running the following command: sudo service ssh restart Use Google Authenticator To use Google Authenticator, you will need to generate a one-time passcode on your Android device. You can do this by opening the Google Authenticator app and scanning the QR code that was generated during the configuration process. Enter the one-time passcode on your Linux host, and you will be logged in to your SSH server. Summary: This tutorial describes how to set up two-factor authentication for an SSH server by integrating Google Authenticator with OpenSSH.
FEATURES
SIMILAR TOOLS
A tool for SSH server auditing with comprehensive analysis capabilities.
CLI program for cybersecurity solution management with multiple functionalities and authentication methods.
Certificate Transparency Monitor that alerts you when an SSL/TLS certificate is issued for your domains.
SecGen creates vulnerable virtual machines and hacking challenges for learning security penetration testing techniques.
A comprehensive server cryptographic protocol analyzer with API and CLI interface.
A library for validating and accessing environment variables in Node.js programs
PINNED

Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.