For the mobile web interface - there are two options here.
1) Either you go for a Cloud Services subscription and then everything should simply work and you can access it from any network.
2) The other option is to use the built-in web interface where you manually need to configure your router if you want to access the web interface from the outside. If the web interface works on the local network, the work to make it accessible from the outside is about port forwarding configuration in your router.