Access your box from the Internet
This carries certain risks.. you're making your Humax visible to anyone on the Internet, so make sure you're comfortable with this & think hard whether you want to do it or not. Using password protection is probably a very good idea.. so is using a more obscure inbound port.
Here's a great guide from Lifehacker which tells you all you need to know;
- http://lifehacker.com/5831841/know-your-network-lesson-4-accessing-your-home-computers-from-anywhere
You'll need to know the IP address of your Humax box & make sure it's using a static IP address (not DHCP). The WebIf is on port 80.
Your ISP probably assigns you a dynamic IP address, so you'll need to investigate something like DynDNS. That needs you to use a PC (or something else on your network) to update the DynDNS server with your latest IP. It'd be nice if the Humax had a package to allow the box to do this itself.