Security Engineering

Linux, NGINX, Docker, and VPS Hardening

Review and strengthen production hosts so applications run with safer defaults, clearer logs, and fewer exposed edges.

Discuss this service
Who this is for

Teams running websites, APIs, dashboards, or automation on Linux VPS infrastructure.

The problem

What this engagement is meant to change.

Review and strengthen production hosts so applications run with safer defaults, clearer logs, and fewer exposed edges.

  • Open services and stale packages
  • Weak firewall, SSH, reverse-proxy, or TLS configuration
  • Containers and application processes deployed without operational guardrails
Systems and environment

Use the stack you already run.

The review or build is grounded in the stack, data, permissions, and deployment conditions that the result has to survive.

  • Debian
  • Ubuntu
  • Kali
  • NGINX
  • Docker
  • systemd
  • PM2
  • Certbot
Deliverables

What you receive and can operate.

  • Hardening plan
  • Firewall and SSH review
  • NGINX/TLS cleanup
  • Docker and process-manager recommendations
  • Rollback-aware change notes

Typical starting points: Secure a Next.js VPS; Clean up exposed administrative surfaces; Prepare a host for production launch.

How it begins

Define the first deliverable.

Hardening is scoped by host count, application count, access level, maintenance window, and the changes that can be validated safely.

See related public work
Operational safeguards

Boundaries are part of the deliverable.

Application rewrites, unmanaged hosts, and changes that cannot be tested or rolled back safely need a separate plan.

Questions clients ask

What to know before we start.

Scope is confirmed in writing. These answers describe the normal shape of this service.

Do you need root access?

Implementation usually needs privileged access. Review-only work can use read-only evidence.

Can this be done without downtime?

Changes are planned to minimize downtime, but risky service changes are scheduled deliberately.

Start with the system

Ready to define the first deliverable?

Send the target, the concern, and what outcome would make the work useful.

Contact BlueDot IT