As we told you before, there are two functions of VPN service, first is connection, second is encryption. We can easy to know whether the connection is good or not. But for encryption, it’s hard to check, when we connect the VPN server, Is it an Encrypted VPN Connection? How can we check that the data is real been encrypted? Now we will told you the method for Mac users and Windows users.
Windows
For Windows users, we need a tool to figure out that Is it an Encrypted VPN Connection when you connected VPN server. Like Tcpdump and WireShark. Here we show you how to use WireShark.
First download WireShark.
Install WireShark with default setting. Here because my Chinese system, so WireShark display Chinese too. You can change it at Edit-Preference. Next are some pictures you can know more details.
When you are testing, you need visit some webpages with http, but not https. Not every packet will be this readable on an unencrypted connection(without VPN), but for most packets you’ll be able to see the actual data, HTML code, protocol headers, etc. But on an encrypted connection(with VPN), not even a single packet will be understandable. And once you know that your connection is safe and encrypt, that will make you feel better.
Mac
For Mac users, we refer another article to show you how.
Firstly, go ahead and download CocoaPacketAnalyzer on your Mac and run it.