Changing NAT Type on iPhone USB Tether

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Defishensee

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Jul 16, 2015
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I am not sure if this is the right place to ask, but it is the only place I can think of to ask. I need to find a way to open my NAT Type.
The only catch: I live in the middle of nowhere, so my source of gaming internet is using pdanet from my jailbroke iphone. I get around 40 ping in games and it works well.
With the upcoming Black Ops 3, I want to open my NAT type. I want to do it so my carrier (Sprint) also does not catch my tethering. Someone on another thread said that opening my NAT type would allow them to notice it easier, although I do not know if that is true.
That same person also mentioned setting up a VPN network or something like that.
To be clear, I use pdanet usb tethering directly to my pc that I play on. Is there any advice someone could
 
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I don't think NAT type is going to affect anything either way in their ability to detect the tether. End of the day, they can see, if they choose, what ports you are using and what type of traffic it is, and that would easily determine you are tethering and gaming.

A VPN would help mask it. Running a VPN on your PC would encrpyt the traffic, send it to the VPN server, there is decrypted and makes it way out on the internet, so the only thing sprint would see, would be encrypted traffic and not be able to determine what it is.
 
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I am on mobile so I am not sure how to directly reply to you, but:

At this point, I am not too concerned with sprint finding out. I have tethered over 200GB in game downloads and updates on steam and they have said nothing.


How would I go about setting up this VPN server and would it open my NAT? Thank you.
 
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First they likely can detect you have it tethered no matter what you do. Load wireshark on your PC and watch what is being sent over the internet. Things like simple web browsers send things like the version of OS you run and the version of browser you are running. It does not take much for the ISP to read these headers. This is how a web site knows to send you phone a mobile browser page rather than one loaded with things like flash that are not supported.

So you take the next step which is to run VPN to hide your traffic. Problem is most forms of VPN are easily detected and these too do not run on phone platform. But lets say you get very ambitious and find a vpn that really runs on the phone and uses true HTTPS....openvpn does not even though it says it does. The ISP will still see very high traffic and they can see the IP that you are going to. If they lookup the IP and find it is a vpn service they know you are likely up to no good. In many cases VPN traffic is not allowed in the unlimited plans and is charged at a higher tethered price.

But back to your question. The nat type likely is not even your phone. Most mobile broadband providers are doing nat someplace in their network. You generally share a IP with other users. This means you can not solve the nat problem by things like port mapping etc because the router is in the ISP network where you can't make changes.

You really only have 2 option. Get a service that can run IPv6. You generally have actual routable IPv6 addresses on phones. Or use a VPN that provides you a non sharged IP address. The VPN is not a issue when it is only used to get around the NAT problem it is when you are trying to avoid paying money to the ISP that it gets to be a problem.
 
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This sounds kind of out of my grasp...so if I set up a VPN, it will make sprint more able to track that I'm doing it?

Is there a simple way to use it to just open the NAT type?
 
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You posted this when I was writing my other post....but do not get real brave because you have gotten away with this before. This is done manually because it can easily lead to lawyers involved. They will chase the biggest offenders first but you keep it up and they will get around to going after you. The first you will know is when a huge bill comes. They are experts at the fine print in the contracts so they know they can win in court if you try to not pay.

The company I work for provides service to many large cell providers and I actually worked with the technical guys in how exactly to detect this in a way that will hold up in courts. You are taking a much larger risk than I suspect you think you are.

 
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It is simple VPN can be detect which is against their allowed use policy.
If you manage to get the nat type to work they can still see it is game traffic which is also against their policy.

Pay for a tetherd service and you can load a gaming vpn on your pc and the ISP will not care.
 
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The strict nat issue is a huge problem on mobile broadband even when you pay for a tethered service or use the special routers provided by the ISP. Verzion is one the very few that will give you a actual IP address for a extra charge of course.

What is funny is the only truly unlimited plans you can run tethered on are old verizon plans that were grandfathered and you do not dare to make any changes and pay full price for any phone upgrades.
 
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Most of the games I play online are not effected by strict NAT type. (Csgo, rocket league, etc) it's just the call of duty games and gta v that cannot be played online.


I am gonna cut down on the amount I tether. Most cases I have read said sprint does not do a lot when it comes to people who tether, but I want to be safe
 
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