We have recently announced that Opera has released a new browser version of its browser that supports Virtual Private Network (VPN) connections for free. 
The new version of Opera protects the privacy of the end user and of course too many were the ones who started using it.
The browser VPN client is free of charge as described above, does not impose restrictions on bandwidth or user data, and there is no reason not to use it unless you already use another VPN.
It would be good, however, not to stick to what she tells us company. We should make sure that the application VPN does not leak information to remote servers.
If you enable VPN in the Opera and check for leakage in IP addresses, you will notice the following:
The common IP controls only reveal the VPN IP address, but not the "real" IP of the computer.
A check with WebRTC Leak service reveals the local and remote IP address of the computer.
Click to enlarge
To be fair this doesn't just happen in the Opera web browser, as most modern programs do tours support WebRTC and through the feature they leak the IP address even if there is a VPN enabled on the device.
Some browsers like Firefox allow you to disable WebRTC altogether while others do not offer this option.
Knowing that the WebRTC service can be used by websites to identify you, even with the use of a VPN or a proxy server, it is a good idea to disable the feature especially if you don't use it.
Opera browser does not have built-in options to disable WebRTC, but you can install an extension that handles WebRTC leaks in the browser and improves your privacy by using Opera's VPN or another VPN system.
Download and install the WebRTC Leak Prevent extension in the Opera browser. You will notice that it will directly prevent access to your local IP address on your computer, but the public IP address of the device will still be visible from Opera's WebRTC application.
Let's see what we can do: Open the extension settings from:
opera: // extensions /
In the list of installed extensions you find if you go to the above address, select options in the WebRTC Leak Prevent extension and in the new window that opens, click the Prevent WebRTC box from using non-proxied UDP.
In the upper drop down that says IP handling : select “Disable non-proxied UDP (force proxy)”.
If you missed a lot, look at it below picture:
If you now run a new test to find a WebRTC leak, you will see that it is no longer there. Opera will not show your local or public IP address after installing the extension and the above settings.
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