Update README.md

README.md

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-# proxmox-network-diagnostics
+Bash script for Proxmox network diagnostics. Here are the key features:
 
-The script will guide you through various network diagnostic options with clear menus and prompts.
+1. Interactive Menu System:
+   - Main menu with multiple diagnostic options
+   - Sub-menus for detailed testing of specific components
+   - Clear color-coded output for better readability
+
+2. Major Functions:
+   - DNS resolution testing
+   - Port testing (specific or common Proxmox ports)
+   - Network interface inspection
+   - Connectivity testing (ping, MTR, bandwidth)
+   - Network card diagnostics
+   - Firewall status checking
+
+3. Additional Features:
+   - Root privilege check
+   - Automatic installation of required tools if missing
+   - Color-coded output for better visibility
+   - Error handling for various scenarios
+   - Support for both automated and interactive testing
+
+To use the script:
+
+1. Save it to a file (e.g., `proxmox_network_diagnostic.sh`)
+2. Make it executable: `chmod +x proxmox_network_diagnostic.sh`
+3. Run it as root: `sudo ./proxmox_network_diagnostic.sh`