The exploit is possible because the local network may have a rogue DHCP server overwriting IP routes. If you’re on a mobile network, they are the local network. TunnelVision means a mobile carrier can spy on your VPN traffic now. Unless you run Android.
Yep, https://dnsleaktest.com is your friend
It doesn’t affect Android and Linux is the only OS with the possibility of a fix. I’ve seen people suppose that Android just always ignores option 121. My guess for Linux is that, because system level changes are allowed, you can modify the system to ignore option 121.
I’m not a network engineer, so I do not know this for sure. Does anyone else know more about it?
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This is awesome, thanks. Now that I have it installed I’d like to try it. Know any websites to test it out?
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I think the new thing is that VPN usage is fairly mainstream now. There are lots of services that advertise themselves as having the ability to hide all traffic. It’s certainly news to me, as I hadn’t even heard of a VPN in 2003. The researchers do say that this has been possible since 2002.