Log into your router and turn on UPnP (Universal Plug and Play), most routers have this option in the Administration tab.


The goal is to have an OPEN NAT in order to host Spec Ops games and get a wider selection of MP matches to join.


For more information on enabling UPnP on your router, visit your router manufacturer's website. A few of the most popular router web sites are listed below:


Linksys: http://www.linksysbycisco.com/support

Netgear: http://kb.netgear.com/app

D-Link: http://www.dlink.com/support

Belkin: http://en-us-support.belkin.com