Architecture Overview

Monitoring Pipeline

Database Exposure Strategy

Reverse Proxy Security Role

Threat Model Considerations

Why this setup? I recently documented my hardened VPS security architecture used for deploying production Node.js and Web3 backend services as a solo operator. The goal of this setup was simple: reduce attack surface

isolate administrative accessimprove monitoring visibilityand keep infrastructure manageable without Kubernetes complexity https://github.com/messut35/secure-nodejs-vps-architecture This VPS setup uses a layered security model: Internet↓Cloudflare (WAF + TLS + origin protection)↓Nginx reverse proxy↓Node.js services (PM2) Administrative access is separated using a private WireGuard access plane: Operator device↓WireGuard tunnel (10.77.0.0/24)↓Grafana / dashboards / internal services Security visibility is implemented using: auditd→ promtail→ Loki→ Grafana→ Telegram alerts This allows detecting: unexpected binary executionprivilege escalation attemptsconfiguration tamperingservice access anomalies Databases are not exposed publicly. PostgreSQL and Redis are bound to: This prevents lateral movement from external network surfaces. Nginx acts as a segmentation layer between: public APIsandprivate infrastructure services Cloudflare origin protection ensures the VPS IP is not directly exposed. This architecture mitigates common VPS risks: SSH brute force attacksexposed admin dashboardsdatabase exposure risksreverse proxy misconfigurationsilent privilege escalation attempts This architecture is designed for: solo operatorsself-hosted SaaS buildersNode.js backend developersWeb3 payment infrastructure deployments who want production-level security without introducing orchestration complexity. If you're running Node.js services directly on a VPS, I'd be curious how others structure their monitoring and admin-plane isolation strategies. Templates let you quickly answer FAQs or store snippets for re-use. as well , this person and/or