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docs/SERVER.md

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 # SERVER
 
----
+## Overview  
+
+This document describes the architecture and setup of the self-hosted **NixOS server**, which is securely accessible via **Tailscale**. The server is designed for private, secure, and easily manageable self-hosting of various services.
+
+![server dashboard](../.github/assets/server_dashboard.png)
+
+## **Why This Setup?**  
+
+- **Private & Secure**: Services are only accessible through Tailscale, preventing exposure to the public internet.  
+- **Domain-based Access**: A custom domain (`example.org`) maps to the server's Tailscale IP, making service access simple and consistent.  
+- **Automatic SSL Certificates**: Using DNS-01 challenges, valid SSL certificates are generated even though the services are not publicly exposed.  
+- **Modular & Declarative**: Everything is managed through NixOS modules, ensuring reproducibility and easy configuration.  
+
+## **Self-Hosted Services**  
+
+The server hosts several key applications:  
+
+### **Core Infrastructure**  
+
+- **NGINX**: Reverse proxy for routing traffic to services via `example.org`.  
+- **Bitwarden**: A self-hosted password manager for secure credential storage.  
+- **Nextcloud**: A private cloud solution for file synchronization and collaboration.  
+
+### **Networking & Security**  
+
+- **AdGuard Home**: A self-hosted DNS ad blocker for network-wide ad and tracker filtering.  
+
+### **Monitoring & Storage**  
+
+- **Glance**: An awesome dashboard! (See the screenshot above)
+- **Hoarder**: A self-hostable bookmark-everything app (links, notes and images)
+
+### **Media & Content Management**  
+
+- **Arr Stack (Radarr, Sonarr, etc.)**: Automated media management tools for handling movies and TV shows. (legaly ofc)
+
+## **How It Works**  
+
+1. **Domain Configuration**  
+   - `example.org` is pointed to the Tailscale IP of the server. (cloudflare A record, not proxied)
+   - This allows for easy access without exposing services to the internet.  
+
+2. **SSL Certificate Generation**  
+   - Certificates are obtained using a **DNS-01 challenge**, verifying domain ownership without requiring public access.
+
+3. **NGINX Reverse Proxy**  
+   - Routes incoming requests from `*.example.org` to the correct internal service.  
+   - Ensures SSL termination and secure connections.  
+
+4. **Access Control**  
+   - Only devices within the Tailscale network can reach the services.  
+   - Firewall rules restrict access further based on necessity.