Quote: "Great, you've given us an address we can only connect to if we are on your LAN."
Or, if you have a router offers the feature to submit dynamic ip updates to DynDNS, you can just sign up for a free domain at DynDNS.com and have your router send DynDNS your current IP
They also make software clients if your router doesn't have the feature built-in like my awesome router does
That said, I would like to point out that we have no idea if he has a static or dynamic IP, since his IP he listed is only a local one and totally irrelevant to the online world.