The upshot of this is that any UPnP and/or port forwarding you enable on your router is for naught, because incoming remote access requests never make it that far - they arrive at the public IP address on the other device, where they’re promptly discarded. In this case, the public/private network boundary doesn’t exist on your router - it’s on the other device, which means that both the WAN and LAN sides of your router are private networks. remote access requests) find their way through NAT to the appropriate private network PC or other device.īy contrast, when NAT is being performed not just on your router but also on another device that’s connected in front of it, you’ve got double NAT. NAT manages the connectivity between the public Internet and your private network, and either UPnP or manual port forwarding ensures that incoming connections from the Internet (i.e.

The router’s Wide Area Network ( WAN) port gets the public IP address, and PCs and other devices that are connected to LAN ports (or via Wi-Fi) become part of a private network, usually in the .x address range. In a typical home network, you are allotted a single public IP address by your ISP, and this address gets issued to your router when you plug it into the ISP-provided gateway device (e.g. Double NATīefore we delve more into what double NAT is, how to identify it, and how to correct or compensate for it, let’s first briefly review how NAT works. While double NAT doesn’t generally have any ill effects on run-of-the-mill network connectivity - Web browsing, e-mail, IM, and so forth - it can be a major impediment when you need remote access to devices on your network (such as a PC, network storage device (NAS), Slingbox, etc.). But depending on the type of Internet access equipment you have or have been given by your ISP, you may encounter a situation known as double NAT, which isn’t so good. NAT is definitely a good thing it allows multiple devices to share a single IP address (without it we would have run out of IP addresses long ago) and it helps limit a network’s exposure to the Internet. But when it comes to Network Address Translation ( NAT), the mainstay of most home networks, double doesn’t necessarily equal better.

If something is good, then doubling it usually makes it even better (Double Stuf Oreos are one example that comes to mind).

Asus pce ac68 nat type