Tip #3: Use Port Forwarding
to Access iPIO
If you need to access your iPIO from the internet, you may need to configure your router to properly understand the requests to connect to the iPIO.
Your router has one 'public' or WAN IP Address. Your local network has multiple devices, each with its own 'local' IP address. The process the router uses to identify which request to its public IP address should go to which local IP machine is called Port Forwarding.
In the diagram above, port forwarding instructed the router to forward any requests for port 9090 to local IP address 192.168.1.4 . The iPIO at IP address 192.168.1.4 has been programmed to use port 9090 for as its web server. With this configuration, you could point your browser to the routers public IP address with the port 9090 as the suffix 'http://220.117.3.89:9090'. The router would route the request to the iPIO.
Watch our Port Forwarding Video Tutorial
Each router setup is unique. Here is a good tutorial on how to do it with at typical Linksys router Router Tutorial