The firewall is blocking all the incoming access by default. If you are trying to access something behind the router through the internet, you need to setup the virtual server to enable the access.
You can do that by going into the router’s configuration page.
1. Go to Advanced Setup | NAT | Virtual Server.
2. Add the IP of the system that you want access and the port #.
3. Click “Apply” to save settings.
Posted in: Routers