How do I get two xbox 360s to have an open NAT on a Cisco Linksys WRT160N V2 wireless router?

Open up the Browser interface to your Linksys (http://192.168.1.1/ if you left it as default), and go to your Security section. On the Filter tab, check the box beside "Filter NAT Redirect" and "Save" at the bottom.
If you have an Xbox and you keep the settings as automatic in the network area, you should have an open NAT.

try this :

1. Log into the router using 192.168.01. or 192.168.1.1
this is done using a browser window such as Internet Explorer or Firefox.
2. go to Application & Gaming
3. In the box on the right column us wan to enter the device ( example: Xbox)
4. you need to enter the start and end port next ( example: 88 and 80
5. then your protocol ( example: tcp ,UDP, or both
6.the IP address if next
7.check enable
8. then save
9. here is the site with an example page to configure your router.http://homecommunity.cisco.com/t5/Wireless-Routers/Xbox-360-NAT-issues-solved-WRT160N-v3/m-p/310658?comm_cc=HSus&comm_lang=en#M163159

1. Log into the router using 192.168.01. or 192.168.1.1
this is done using a browser window such as Internet Explorer or Firefox.
2. go to Application & Gaming
3. In the box on the right column us wan to enter the device ( example: Xbox)
4. you need to enter the start and end port next ( example: 88 and 80
5. then your protocol ( example: tcp ,UDP, or both
6.the IP address if next
7.check enable
8. then save
9. here is the site with an example page to configure your router.http://homecommunity.cisco.com/t5/Wireless-Routers/Xbox-360-NAT-issues-solved-WRT160N-v3/m-p/310658?comm_cc=HSus&comm_lang=en#M163159
3.

3. In the box on the right column You wan to enter the device ( example: Xbox)
4. you need to enter the start and end port next ( example: 88 and 80
5. then your protocol ( example: tcp ,UDP, or both
6.the IP address if next
7.check enable
8. then save
9. here is the site with an example page to configure your router.http://homecommunity.cisco.com/t5/Wireless-Routers/Xbox-360-NAT-issues-solved-WRT160N-v3/m-p/310658?comm_cc=HSus&comm_lang=en#M163159
3.

You are trying to open the NAT on the router for X-box.
For this you will need to reduce the MTU settings on the router to 1365.
You will also need to trigger some ports on the router.
For this you will need to open the router set up page.
Router set up page is the page where you can change the settings of the router

Click Here to know more about router and network

If your only using this router for Xbox Live id Ditch is I had this same router had nothing but Problems heres a link with a list of compatible routers. http://support.xbox.com/support/en/us/xbox360/xboxlive/getconnected/compatiblenetworkequipment/compatiblenetworkingequipment.aspx

connect the 360 to a port in the router and have the internet going straight into ur router ull stay connected at all times as soon as u turn on the xbox itll log on automaticly

yo tengo problema co el asistente de conexion del linksys

This one is simple. Find the IP address that your Xbox is assigned by your router, then put it into the DMZ. This also goes for PS3 users who are having trouble with internet access.

You need to open all the ports for the xbox live. The NAT of that router model cannot be configured to open. Its just a simple NAT for internet connection.