Linux server hardening
Who it is for: VPS, dedicated servers and virtual machines running Debian, Ubuntu, RHEL or derivatives.
What it includes
- Surface reduction: unnecessary services out, ports closed by default
- Hardened SSH: key-only, no root, attempt and session limits
- Firewall and fail2ban with per-profile rules, not a copied recipe
- Kernel and sysctl tuning according to the server role
- Automatic, controlled security updates
- Read-only audit with a before-and-after report
