nat router manuals and help in setting various brands including buying advice.
A little explanation on the "Network address translation". For various home applications, it is convenient to use wet IET hub. This only for the firewall still work to do.

You may have a switch or do you want the Xbox 360 to connect to the Internet can be used for this NAT. Access your router via the configuration page and click on the above niety setup wizard.

xbox 360 router

Especially if your home has a large network with more than 1 xbox is hard to list them all connect to the Internet. Here an example for connecting the Xbox via the wet Protocol

184.44.66.151 from 184.44.66.151 port 7069 to port 7069
184.44.66.152 from 184.44.66.152 port 7069 to port 7070