I've got what I suspect is pretty close to the "standard" nerd home setup these days - I've got a Windows PC or two, a media PC hooked up to my TV, and a pair of iPhones, all sitting behind a wireless router/NAT/DSL Modem. No server and no Domain, just classic windows peer-to-peer networking.
Since this is a home network there isn't anything much more valuable than Doctor Who episodes and word processor documents on the systems. In a best case scenario, we wouldn't have any security at all so my wife and I could move files and such around without hassle, but we'd really just as well not have any black hats decide to p0wn the system.
Currently, we've got the full security turned on with the wireless - and that's about it. The default accounts on the windows boxen are Administrator level accounts without passwords. Shared folders on the network are fully shared without needing any credentials.
So, the question is, how much do I really need at home? Can I turn off the Windows Firewall? Can I turn on remote desktop given that the accounts all have a password of
To put it succinctly, for home use, do I really need anything stronger than just a WPA2 wireless router password and a hardware NAT?