Since I've gotten rid of the double NAT its been much easier to connect to lobby's for online gaming and streaming video has become more stable. I use a proxy and it seems to have been somehow affected by the double NAT. I'd like to keep this if possible, but (as stated before) I don't like the idea of having a wide open network.
As notfred alluded to above, you might be able to make use of more capable router. But if you want to turn sharing on for your own separate network, you need a router, period. Routers are the devices that separate networks, be they of the crappy Wal-mart variety or the four-figure Cisco variety.
I have a Linksys E3000 (stock firmware). Would this really be slow enough to cause an issue and would flashing Tomato USB help? I normally get about 40mpbs down and up and sometimes as high as 65mbps.
Anyway, you could strike up a conversation with the super and see how they could accommodate your home network. If their service is sophisticated enough, they might be able to put your router in DMZ, or if really ritzy, put all your machines in DHCP reservations.
Also, I live in a 18 story apartment building that is operated/serviced by four or five different companies. I don't think they're going to agree to make changes to their IT equipment to accommodate me so that's not possible. It's more of a question of what I can do on my end.
My solution would be to put an old machine into service using pfSense with a couple of NICs. You could also hang a WAP off of it, if you wish. This setup would allow you to just route and firewall traffic while still using DHCP from the building. In essence creating a small network using the apartments' IP address range, but keeping out unwanted traffic and killing off the double NAT. Good luck!
I like the idea of setting up an old machine and operating it as a firewall, but I don't have any old machines (besides a netbook).
I'm looking at something like this
to use as an appliance to run pfsense. I'm a little concerned that the LAN ports are Via 10/100 ports while everything else on my network is gigabit.
Benchmarks make it seem like these ALIX units are only good for around 60mbps. That's awful close to what I'm getting which makes me a little nervous.