The most critical step is ensuring all software is current to close known vulnerabilities.
Moving SSH from port 22 to a non-standard port can eliminate up to 99% of automated scans. 3. Identity and Access Management Linux Server Hardening
Below is a structured write-up covering the essential stages of a Linux hardening project. 1. Update and Patch Management The most critical step is ensuring all software
Configure automatic security updates using tools like unattended-upgrades on Debian/Ubuntu or dnf-automatic on RHEL/Fedora. 2. Secure Access (SSH Hardening) Linux Server Hardening
Securing the primary remote entry point is vital for stopping automated brute-force attacks.
Run system updates immediately upon setup (e.g., apt update && apt upgrade for Debian/Ubuntu or dnf update for RHEL/Fedora).