ATT Double NAT

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  • Updated 8 months ago

Last year I obtained a copy of V2 SSDR and a new win10 I7 laptop to be able to operate my Flex remotely using SmartLink.  I was unable to connect the two as was Flex support using TeamViewer.  The conclusion was that my ISP, ATT, uses a double NAT to supply my Internet.

 

I was offered help by an independent individual who indicated he had been able to successfully use the same or similar device with SmartLink.  I followed his instructions but the modem bricked just outside of warranty requiring a new purchase.

 

Has anyone found a workaround for the ATT double NAT problem?  If not, are only a few Flex uses affected allowing this limitation to be ignored?



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Larry - W9FLA

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Posted 8 months ago

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W5AP

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I think that is what I had, but please explain what double NAT is.

I contacted my ISP and explained that I needed to access my equipment from out on the WAN. He said I needed to set up a static IP - which I did, and pay for.   That solved the problem.  I've also heard that others are using a virtual private network - but I didn't go that route.
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Larry - W9FLA

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Here is what I found and believe. 

Double NAT
, or multiple routers on one network, is when two or more Routers' Network Address Translations (NAT) are placed one after the other.

Double NAT (Double Routing) is most common when you connect an additional router to the existing router or gateway your Internet Service Provider gave you.

In my case, ATT provides me with a public address, the first NAT.  I believe that my router then translates this to my internal LAN's NAT of 192.168...