I have Windows Vista, a Netgear modem and I'm pretty sure that the version is CG814WGv2. I've tried using the website http://portforward.com/english/routers/port_forwarding/Netgear/CG814WGv2/Halo.htm but it didn't work, and I tried turning off my Firewall completely, but it didn't work. Every time I go on matchmaking or do Campaign with friends online, the modem turns off. Someone told me that the modem thinks that since so much is going through, that it thinks there are viruses attacking so it shuts down. Please help.