Linux Server Hardening Today

Linux server hardening is the process of reducing a system's attack surface to protect against unauthorized access and data breaches. A default Linux installation is often a "blank canvas" rather than a fortress; hardening provides the necessary reinforcement.

Securing the primary remote entry point is vital for stopping automated brute-force attacks. Linux Server Hardening

Follow the principle of least privilege to limit what users and services can do. Linux server hardening is the process of reducing

Disable password-based authentication ( PasswordAuthentication no ) in favor of SSH key-pair authentication . Linux Server Hardening

Prevent direct root access by setting PermitRootLogin no in /etc/ssh/sshd_config .

Moving SSH from port 22 to a non-standard port can eliminate up to 99% of automated scans. 3. Identity and Access Management