Linux Server Hardening -

Configure automatic security updates using tools like unattended-upgrades on Debian/Ubuntu or dnf-automatic on RHEL/Fedora. 2. Secure Access (SSH Hardening)

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

Follow the principle of least privilege to limit what users and services can do. Linux Server Hardening

The most critical step is ensuring all software is current to close known vulnerabilities. Linux Server Hardening