Add network requirements and port configuration

SETUP_GUIDE.md

@@ -413,4 +413,75 @@
    
    # Make script executable
    chmod +x monitor_db.sh
+   ```
+
+## Network Requirements
+
+### Required Ports
+
+1. **Customer Server to Hugging Face Space**
+   - Port 443 (HTTPS) - For API communication
+   - Port 3306 (MySQL) - For database connections (if using external database)
+
+2. **Customer Server to Customer Database**
+   - Port 3306 (MySQL) - For database connections
+   - Ensure database server is accessible from customer's network
+
+3. **Asterisk Server Requirements**
+   - Port 5060 (SIP) - For VoIP communication
+   - Port 10000-20000 (RTP) - For audio streaming
+   - Port 5038 (AMI) - For Asterisk Manager Interface (optional)
+
+### Network Configuration
+
+1. **Firewall Rules**
+   ```bash
+   # Allow outbound HTTPS to Hugging Face
+   sudo ufw allow out 443/tcp
+   
+   # Allow outbound MySQL to database
+   sudo ufw allow out 3306/tcp
+   
+   # Allow SIP and RTP ports
+   sudo ufw allow 5060/udp
+   sudo ufw allow 10000:20000/udp
+   ```
+
+2. **Security Groups (if using cloud providers)**
+   - Allow inbound HTTPS (443) from Hugging Face IPs
+   - Allow inbound MySQL (3306) from customer server IP
+   - Allow inbound SIP (5060) and RTP (10000-20000) from VoIP providers
+
+3. **Network Testing**
+   ```bash
+   # Test HTTPS connection to Hugging Face
+   curl -v https://your-huggingface-space-url
+   
+   # Test MySQL connection
+   mysql -h your-db-host -u your-user -p -e "SELECT 1;"
+   
+   # Test SIP connectivity
+   sipshowpeers
+   ```
+
+### VPN Requirements (Optional)
+
+1. **Site-to-Site VPN**
+   - Recommended for secure database access
+   - Configure VPN between customer network and database network
+   - Use VPN for all database traffic
+
+2. **VPN Configuration**
+   ```bash
+   # Example OpenVPN configuration
+   client
+   dev tun
+   proto udp
+   remote your-vpn-server 1194
+   resolv-retry infinite
+   nobind
+   persist-key
+   persist-tun
+   remote-cert-tls server
+   auth-user-pass auth.txt
    ```