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 Linux Server Hardening

Follow the principle of least privilege to limit what users and services can do. Prevent direct root access by setting PermitRootLogin no

Below is a structured write-up covering the essential stages of a Linux hardening project. 1. Update and Patch Management Identity and Access Management Follow the principle of

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

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.