Strict NAT, nothing works

What Country/State/Province do you live in? Pennsylvania, USA

Modem brand & model number: **** TG862G wireless gateway

Router brand & model number: None

Wired or wireless: Tried both, wired for now

Things you have tried: Port Forwarding, DMZ, Port range triggering, UPnP, disabled firewall, had a different router/modem combination and encountered the same problem. I have a public IP. Tried messing with IPv6 settings, but they
are set to default now. I've also set the console up in energy saving mode as I've read that UPnP doesn't always work in the other mode.

Is UPnP Enabled? Yes

Do you have a NAT error? If so, what is your NAT type? Strict

Any Error Codes you encounter: Can't find Teredo IP

Who is your ISP?(Internet Service Provider): Comcast

I tried contacting Comcast and after an hour, they told me they don't support Xbox One, but I've had the console since Christmas and it was fine until recently. I'm also going to try my console at a friends house tonight who has the same internet setup as
I do to see if it is a problem with the console or internet.

:)

 

Need help with my NAT type

I have been trying everything to get my NAT type open but nothing works because no one has the same NAT type as mine:

NAT type: Strict

Your network is behind a port-symmetric NAT

its very frustrating having a strict NAT type so please help

 

Can't find wireless network

Wired connection seems to work.

NAT is showing as 'strict'. Wonder why the wireless is playing up.