Forum Discussion
NAT (Forwarding) in T-Mobile Gateway
I recently signed up for T-Mobile internet, and I am VERY disappointed that I could not even forward NAT traffic to my home security system. I saw that this was discussed 7 months ago in a previous...
The T-Mobile network is working as designed. NAT464 is a transition strategy. Your phone, or your home Internet device, is assigned a public, globally routable, unique IPv6 address. It is better for everyone, everywhere, if we speed up the transition to IPv6. When you request an IPv4 site, your device does NAT46 and then carries the traffic to a NAT64 gateway operated by T-Mobile on the Internet edge. It works very, very well. The downside, of course, is that you do not have a globally routable IPv4 address on which you can expose ports.
It is possible to expose ports, but of course only on your IPv6 address. This means that you would only be able to connect to it from IPv6 clients. For many applications this is an acceptable tradeoff. As the supply of IPv4 addresses continues to become more problematic, you should expect other providers to begin adopting this strategy as well.
