Ubuntu Server Hardening Checklist

Server hardening should be part of your deployment baseline, not an afterthought. Begin with package updates, least-privilege access, and key-based SSH authentication.

Restrict exposed services, enforce firewall policies, and set up intrusion monitoring. Add log centralization and alerting so you can detect suspicious activity quickly.

Finally, automate these hardening steps using scripts or infrastructure tooling to keep environments consistent and auditable.