Step 2: If the UPnP status indicates an error, disable RemoteTap and then re-enable it to try again. If the error messages continues to appear, check if Universal Plug-and-Play (UPnP) is enabled in your router. If not, enable UPnP on the router and disable/enable RemoteTap to check again.
Step 3: If UPnP is still not successful, but you are sure your router supports UPnP, use the free PortMap application to verify the UPnP settings of your router.
Step 4: If UPnP is not successful, or not supported by your router, port forwarding needs to be setup manually as described at step 3 here.
Step 5: Verify UPnP or manual port forwarding by using your external IP address as the IP/DNS in RemoteTap on the iPhone. Your external IP address is shown in the RemoteTap preferences pane, or you can check it here. If this is not successful, please verify if there is any other device between your network and the Internet which might change IP addresses as well. To verify this, open a Terminal window (in /Applications/Utilities) and type the following command:
Please copy the result into a mail and send it to our support team for investigation.
Step 6: If the connection using the external IP address works, get a free DNS name as described here. Make sure to either setup your router to update the dyndns or no-ip service, or install the their free clients. This is required to update your DNS name whenever your ISP changes your external IP address.