What do you need to know about your VPN service: Is it really safe? | WHAT REALLY HAPPENED


What do you need to know about your VPN service: Is it really safe?

Unfortunately, not all popular VPN services provide anonymity.

VPN is, in a sense, a tunnel through which encrypted data is transmitted. Your ISP does not have the ability to see which sites you visit, what you type in, etc. Also, the site you are visiting receives not your real IP address, but the VPN server address. It would seem that there is nothing to worry about. In fact, it's not like that.

Currently, commercial providers offer the following VPN protocols:

PPTP is used most widely, fast, easy to configure, but is considered "least secure" compared to the rest.

L2TP + IPSec. L2TP provides “transportation”, and IPSec is responsible for encryption. This bundle has stronger encryption than PPTP. It does not have most vulnerabilities that PPTP has. It also provides message integrity and each party authentication.

OpenVPN is safe, open, and, therefore, popular, allows you to bypass many locks, but requires a separate software client.

SSTP is as secure as OpenVPN, does not require a separate client.

As a rule, most people use free VPNs. Those tools usually use the following protocols: PPTP and OpenVPN. If you do not have a separate software client on your computer, tablet, you are most likely connected via PPTP. As you have already read, this protocol is the least secure.

Now I have to tell you how your browser downloads the web page of the desired site. When you enter the URL of the site (or follow the link) in the address bar, the alphabetic name is translated into the IP address of the site. The IP address is a 32-bit number. A convenient form of IP address consists of four decimal numbers with a value from 0 to 255, separated by dots, for example, 192.168.0.2. This is the IP address of the so-called fourth version of the IP protocol (ipv4), but still, not many people know that there is a sixth version of the IP protocol and IP addresses look quite different for ipv6.

In the 6th version, (IPv6) has 128 bits. Inside the address, the delimiter is a colon like 2002: 0db8: 84a3: 0001: 0000: 8a3e: 0370: 7754. The protocols ipv4 and ipv6 are not compatible with each other.

IMPORTANT: Some VPNs do not support the IPv6 protocol.

What does it mean? Let's say someone wants to figure out who you are and where you are. He creates a phishing site that looks like a reputable crypto wallet, say - blockchain.info, and assigns this site the IP address of the ipv6 protocol.

If you visit this site (and your VPN does not support IPv6) the owner of such a site sees your real IP. In addition, your Internet provider knows that you visited this particular website.

Take care of yourself. Do not click on links that you received from "reliable sources." You are not only risking your privacy but may get infected with malware.

To be absolutely sure about your anonymity, it is enough to find out what VPN protocol you are using and whether the service that provides you the VPN supports the ipv6 protocol.

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