Best Practices of SSH Keys Authentication for Multiple Users on a Shared System
Secure Shell (SSH) key authentication is a fundamental component of modern IT security. It offers a robust way to access remote systems while mitigating many risks associated with password-based authentication. However, when multiple users require access to the same system, implementing SSH key authentication can become more complex. This article will delve into the intricacies and best practices of SSH key authentication in multi-user environments, focusing on access control and security. The Basics of SSH Key Authentication SSH keys authentication relies on cryptographic key pairs: public and private keys. The public key is placed on the target server, while the private key is kept securely on the user's machine. To access the server, the user's private key must match the public key stored on the server. Passwords are not involved, making SSH key authentication less susceptible to brute force attacks and other password-related vulnerabilities. Implementing SSH Key Authentic...