1. Initial Setup:

   • The script first checks if it's running as root (administrator), which is required for system changes
   • It defines important variables like ports and file paths that will be used

2. ZeroTier Installation:

   • Installs ZeroTier One client using their official installer
   • Joins your ZeroTier network (you'll need to put in ssh with your actual network ID)

3. Network Configuration:

   • Waits for the ZeroTier network connection to establish
   • Gets your ZeroTier IP address (the address assigned to your server on the ZeroTier network)

4. Backup Creation:

   • Creates backup copies of your nginx configuration and database
   • This is a safety measure in case you need to revert changes

5. Service Configuration:

   • Modifies the nginx configuration to only listen on your ZeroTier IP address
   • Updates the firewall rules in the SQLite database to:
     • Remove existing rules for SSH and CloudPanel ports
     • Add new rules that only allow access from your ZeroTier IP

6. Service Restart:

   • Restarts nginx and SSH services to apply the changes
   • Verifies ZeroTier connection status

To use this script:

1. Save it to a file (e.g., setup-zerotier.sh)
2. Replace YOUR_NETWORK_ID_HERE with your actual ZeroTier network ID
3. Make it executable: chmod +x setup-zerotier.sh
4. Run it as root: sudo ./setup-zerotier.sh

Important Notes:

• Keep your backup files safe in case you need to restore
• After running this script, you'll only be able to access SSH and CloudPanel through ZeroTier
• Double-check your ZeroTier network ID before running
• Make sure you have access to your server through ZeroTier before running this script
• Test the connection through ZeroTier before logging out of your current session