Article: ProtonVPN IP Leakage on Linux and Workaround | PrivSec - A practical approach to Privacy and Security Killswitch does not work with all network interfaces. Can you be tested using following command curl --interface <physical interface> https://ipinfo.io Suggestion add an additional not…

[image] Encounter5729: I would agree that this issue in itself obviously doesn’t in itself merits delistment. I’m going to mark this topic (which is specifically about adding a warning to Proton VPN about this issue) as approved , because I think it is fairly reasonable for us to do, and it se…

At the risk of going slightly off topic… I agree that privacy guides should at a minimum provide very clear warnings (like at the very beginning of any recommendations) when issues like this are known. (Removing recommendations completely may also be warranted.) Basically, proton doesn’t warn user…

This topic remains an issue. [image] Remove ProtonVPN The completely different problem to the macOS one that Proton has on Linux, which is described at ProtonVPN IP Leakage on Linux and Workaround | PrivSec - A practical approach to Privacy and Security remains an issue (which I confirmed with t…

[image] Remove ProtonVPN To be clear, the kill switch on Linux is fully functional It isn’t and developers have to constantly fight with networkmanager, systemd resolved, dhclient, resolvconf quirks. Hence why Proton and Mullvad state the officially supported OSes that are claimed to be tested…

For what it’s worth, at the moment I believe the most reasonable solution to this is to add a section to our VPN overview article saying that software kill switches shouldn’t be relied upon, and if you need greater assurance you should use Qubes or a dedicated external hardware device (router) that …

I think this is the correct answer. The known instances where VPN clients have leaks are going to shift so frequently that it will be hard to keep up with updating the notes. I mostly care about our user base having fair warning that their kill switch likely isn’t giving them 100% protection. Adding…

On Linux in particular, an ideal test suite would take a bunch of network managers with their upstream configuration and test VPN clients against them, then make the same tests on Debian, Fedora and other stable distros that are known to reconfigure the software to their liking and draw conclusions …

[image] Remove ProtonVPN bypass the kill switch by binding to a specific interface could be considered out of scope for what a mere software kill switch has to be doing Why? Binding to a network interface isn’t some dark arts. It is very normal and a very usual thing for programs using the BSD…

[image] ignoramous: the OS/Kernel might very well take a routing decision that also bypasses that external hardware router (for instance, connect via another radio). I’m not sure I follow. I feel like your computer randomly reaching out to some network you didn’t connect it to is very outside…

[image] dadnerd: It will also raise awareness for VPN on router, which I think is a great solution. I’ve tested a bunch of OpenWRT forks and know for a fact GL inet routers are leaky, for example. Merely stating the existence of VPN routers isn’t enough as people will inevitably follow bad/un…

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ProtonVPN Additional note: Killswitch failure and IP Leakage on Linux

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ProtonVPN Additional note: Killswitch failure and IP Leakage on Linux

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