[citation][nom]mavroxur[/nom]The reason that they tell you to use "192.168.1.1 and 10.0.0.1" is because they are both in the private address range. If you cant make it work with either of those two, changing it to 192.168.2.1 isnt going to make it any easier. You could use 192.X.X.X, it's all in the same private address range.[/citation]
I usually don't comment on my own articles, since I feel that this forum should belong to the readers. However, a brief note is needed here, since the above information is incorrect, and will point readers in the wrong direction.
192.168.1.1 or 10.0.0.1 are not used simply because they're in the private address range, they're used because they're typical router IP addresses. If you don't point the Xbox 360's Gateway setting to the router that's feeding the Xbox, you're not going to connect. For the same reason, you cannot use 192.X.X.X, unless you like the idea of a 1 in 16.7 million chance of the setup working (there are 256 ^ 3, or 16,777,216, addresses in that range, 192.168.
2.1 is the only correct one for the Gateway). The Gateway address MUST point to the router, and in the case of a Mac, the Mac is acting as the router. And unless you dive into the underlying Unix architecture to change it, Macs expect IP addresses in the 192.168.
2.x range, with 192.168.
2.1 as the Gateway. Otherwise you'll fail to make the connection.
Here's a screen shot of terminal output showing the relevant underlying Unix configuration:
http/picasaweb.google.com/Anthony.Celeste/MacUnix?authkey=Gv1sRgCKP51c6Jy4SKzwE&feat=directlink