Connect to Wireless Devices Outside Your Network

TL;DR

Yes, you can communicate with a wireless device outside your local network (LAN) using techniques like port forwarding, VPNs, or cloud-based services. The best method depends on the devices involved and your technical skill level.

How to Communicate With Wireless Devices Outside Your LAN

1. Understand the Problem: Normally, wireless devices on different networks can’t ‘see’ each other directly. They need a way to connect through the internet.
2. Port Forwarding (Advanced): This lets traffic from the internet reach a specific device on your home network.
   • Find Your Router’s IP Address: Usually 192.168.1.1 or 192.168.0.1. Type this into your web browser.
   • Log In to Your Router: You’ll need the username and password (often ‘admin’ for both, but check your router’s documentation).
   • Find Port Forwarding Settings: Look for sections like “Port Forwarding”, “Virtual Server”, or “NAT”.
   • Create a Rule: You’ll need to specify:
     • Service Name: A descriptive name (e.g., ‘My Wireless Device’).
     • Internal IP Address: The IP address of the wireless device on your LAN. You can find this using ipconfig (Windows) or ifconfig (macOS/Linux).
     • External Port: A port number that people outside your network will use to connect (e.g., 8080). Choose a high-numbered port for security.
     • Internal Port: The port the wireless device is listening on (e.g., 5000).
     • Protocol: TCP or UDP, depending on what your device uses.
   • Find Your Public IP Address: Search “what’s my ip” on Google. You’ll need this to connect from outside.

   Warning: Port forwarding can create security risks if not configured carefully. Only forward ports you absolutely need.

3. Virtual Private Network (VPN) (Recommended): A VPN creates a secure tunnel between your devices.
   • Choose a VPN Provider: Many options are available, both free and paid. Paid services generally offer better security and speed.
   • Install the VPN Client: On all devices you want to connect.
   • Connect to the VPN Server: This will give your devices IP addresses on the same virtual network.

   Once connected, devices on the VPN can communicate as if they were on the same LAN.

4. Cloud-Based Services (Easiest): Some wireless devices work with cloud platforms.
   • Check Device Compatibility: See if your device supports a service like IFTTT, ThingSpeak, or a manufacturer’s cloud platform.
   • Create an Account and Configure the Device: Follow the instructions provided by the service.

   These services often handle communication for you, simplifying setup.

5. Direct Connection (Less Common): Some devices support direct Wi-Fi connections without a router.
   • Check Device Documentation: Look for features like Wi-Fi Direct or Ad-hoc mode.
   • Configure the Connection: This usually involves selecting the device’s network from a list on your other device.

Important Considerations for cyber security: Always use strong passwords, keep your software updated, and be cautious about opening ports to the internet.