To help its users, ProtonVPN recommended turning Airplane Mode on, then back off, after connecting to its VPN service. That doesn’t work for third-party VPN apps, though, and it requires using a device management tool. In the meantime, Apple suggested using Always-on VPN to mitigate the problem. VPN apps can’t help, because iOS and iPadOS don’t allow third-party apps to kill existing network connections. A Workaround, but Still No FixĪpple acknowledged the issue in 2020, and said it was looking into ways to fully mitigate it. That’s right, Apple’s push notifications are an example of a process that fails to close its existing connection and re-open it through the VPN tunnel. One example of these persistent connections is something we all know, have a love/hate relationship, but rely upon to keep up with what’s going on in our email and other communications. However, some are long-lasting and can remain open for minutes to hours outside the VPN tunnel. Most connections are short-lived and will eventually be re-established through the VPN tunnel on their own. At the time, ProtonVPN explained the problem with iOS not terminating all existing internet connections. ProtonVPN discovered the bug in 2020, and disclosed it to Apple and, eventually, the public. This means users would, without even realizing it, continue transmitting data over the same insecure connection they were using before turning on the VPN. Because of this bug, the device didn’t close and re-open all of its existing connections after connecting with a VPN. In March 2020, ProtonVPN discovered a bug in iOS 13.3.1. Bug Within iOS Causes VPN Tunnels to ‘Leak,’ Meaning They Aren’t Secure This makes sure all of your incoming and outgoing data is encrypted and nobody can intercept and decipher it. Every network connection from your device should get routed through the VPN tunnel. To reiterate, here’s what is supposed to happen when you connect your iPhone or iPad to a VPN service. While there are other uses for a VPN, such as making websites think you’re in a different place than you really are, the original purpose of VPN tunnels was security.
This happens to make sure all your network traffic is encrypted. Any of your existing network connections should be closed, then re-opened through the VPN. Whenever you connect your device to a VPN, be it your MacBook or your iPhone, all of your traffic should be encrypted through the VPN tunnel. Worse yet, Apple’s known about the issue for years and hasn’t addressed it. Unfortunately, a recent report says a long-time bug in iOS means your VPN isn’t nearly as secure as you think. The expectation is that all internet traffic gets encrypted through the VPN. Many people use a VPN to bolster their online security.
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