IP Address Alias
I need to have a wan ip to be listen in ipconfig but computer is behind router.
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Without more details about your current configuration and what exactly you want to do we can only give general answers. You may have two options if your router supports them: 1) Create a DMZ with a Public IP address and place your PC on the DMZ (assign it the public IP address) 2) Setup the router to forward some or all ports to the internal IP address.