Linux Server Hardening [REAL ★]

Run system updates immediately upon setup (e.g., apt update && apt upgrade for Debian/Ubuntu or dnf update for RHEL/Fedora).

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

Follow the principle of least privilege to limit what users and services can do. Run system updates immediately upon setup (e