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-   -   how can carrier know if I am tethering or not (https://talk.maemo.org/showthread.php?t=66852)

mattbutsko 2010-12-12 00:31
Re: how can carrier know if I am tethering or not
 
Quote:
Originally Posted by kureyon (Post 894470)
I don't know how operators get away with offering "unlimited" plans that are blatantly NOT unlimited. Why isn't anybody in the civilised world suing these shysters for false advertising?
Thanks to the Fair Usage Policy. "Unlimited" is just a marketing scheme, similar to all current 4G standards, HPSA+, WiMax, and LTE all say 4G but none of them are truly 4G speeds. 4G is theoretically 100mbits a second, which nobody has hit yet.

nex 2010-12-12 22:08
Re: how can carrier know if I am tethering or not
 
Quote:
Originally Posted by rambo (Post 894157)
user-agent is also an idea but requires deep-packet inspection which is "computationally expensive" (or running a transparent web proxy between customers and internet but thats not foolproof either).
Vodafone Greece do use a web proxy for their mobile connections last time I checked. It should be trivial for them to check user-agents for incoming requests on the proxy to try and detect desktop browsers.

All this even though the user agent is considered a user settable header and thus not fully reliable for such purposes.

mattbutsko 2010-12-12 22:38
Re: how can carrier know if I am tethering or not
 
Quote:
Originally Posted by nex (Post 895504)
Vodafone Greece do use a web proxy for their mobile connections last time I checked. It should be trivial for them to check user-agents for incoming requests on the proxy to try and detect desktop browsers.

All this even though the user agent is considered a user settable header and thus not fully reliable for such purposes.

True, most then again, most people don't even know what a user agent is let alone that they exist.

qwazix 2010-12-21 08:53
Re: how can carrier know if I am tethering or not
 
Quote:
Originally Posted by nex (Post 895504)
Vodafone Greece do use a web proxy for their mobile connections last time I checked. It should be trivial for them to check user-agents for incoming requests on the proxy to try and detect desktop browsers.

All this even though the user agent is considered a user settable header and thus not fully reliable for such purposes.
It works just fine without the proxy too. The proxy was used some years ago to format normal websites to mobile view and impose a vodafone toolbar on them. I have been disabling the proxy to get full web since my sharp gx30, one of the early phones with full html browser
________
Hayley


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