Tutorials

Docker Linux Nginx Security Networking Self-hosting Web Server Reverse Proxy VPS Debian Ubuntu Firewall Virtual Hosts BGP RPKI BIRD2 FRRouting VyOS Anycast SSH Fail2Ban n8n Docker Compose PostgreSQL Workflow Automation SSL TLS Let's Encrypt Certbot HTTPS tmux Terminal VPS Administration Claude Code AI Tools RIPE NCC UFW iptables GNU Screen Terminal Multiplexer Screen Session Webhooks Self-Hosted proxy_pass WebSocket Ollama AI Agents MCP sshd_config Ed25519 Rootless Docker Seccomp AppArmor Containers OpenClaw Hermes Agent Routing IPv6 systemd FRR TypeScript Node.js ROA Routinator AI Agent Telegram Vim Text Editor Server Administration AIOps Observability Monitoring SigNoz Grafana Langfuse Prometheus IP Transit Production Logging Disk Management OpenObserve OpenTelemetry Datadog Alternative GDPR nftables Loki Promtail LogQL Claude AI Workflows LangChain Backup MySQL S3 Rclone Cron Python Log Analysis Discord Slack Disaster Recovery Traefik Caddy WireGuard Tailscale VPN Headscale Alertmanager Self-Healing Performance Zero Downtime GitHub Actions AI Code Review Gemini CI/CD Rate Limiting DDoS Protection BIND9 DNS High Availability Privacy Vaultwarden Password Manager BGPalerter Plakar Encryption Deduplication Immich Photo Management Google Photos Alternative Replication Offsite Backup Paperless-ngx Document Management OCR Gitea Git Plausible Analytics ClickHouse Uptime Kuma Beszel Hardening Failover Multihoming BFD LLM Observability DeepEval Windows Server Veeam Migration Bare Metal Restore VirtIO P2V

Tutorial

Self-hosting Fail2Ban Security

Self-Host Vaultwarden on a VPS with Docker Compose

Deploy a hardened Vaultwarden password manager on your VPS. Covers Docker Compose with read-only containers, fail2ban, SMTP for 2FA, backup and restore, and emergency access.

12 min readRead →

Tutorial

Fail2Ban DDoS Protection Rate Limiting

Nginx Rate Limiting and DDoS Protection

Configure Nginx rate limiting with limit_req, limit_conn, and fail2ban to protect your server from brute-force attacks and application-layer DDoS without relying on third-party services.

10 min readRead →

Tutorial

Ubuntu Debian UFW

Install and Configure Fail2Ban on a Linux VPS

Set up Fail2Ban to block brute-force attacks on SSH and Nginx. Covers UFW and nftables ban actions, custom jails, recidive escalation, and filter testing on Ubuntu 24.04 and Debian 12.

12 min readRead →