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How to check the security of your VPN service

Wednesday 13 November 2019 | 14:30 CET | Advertorial | provided by Cooltechzone

Many users have long been familiar with various VPN services, which are necessary for the safe and free use of the Internet without censorship restrictions. However, not all users, who use VPN to unblock sites, know that some services cannot provide a high level of security on the Internet. In this article, we will explain how to check your VPN service.

The flaw in VPN encryption not only makes the VPN connection weak but also reduces the user's security. Remote sites can use the WebRTC browser settings embedded in most of them.

In such circumstances, it is quite easy for hackers to find out the real IP address of a user, even if a VPN for Netflix connection protects him. Websites do not use this method to display hidden IP addresses. However, in the future, sites like Netflix, Hulu, and others will be able to use this method to prevent VPN users from accessing their websites. In several lines of code, it is easy to find out the user's IP address, location, and name of the Internet provider.

WebRTC vulnerability is a network issue. However, it can affect applications that can display web pages. And such attackers as hackers, government agencies, Internet service providers, and others can track your data and browsing history.

In this situation, it is essential to check your VPN connection and take measures to ensure confidentiality to prevent any barriers to using your favorite services, such as Netflix, BitTorrent, or any other streaming service.

Such browsers as Firefox, Chrome, and Opera allow WebRTC by default. However, Internet Explorer and Safari will not enable WebRTC until you enable it yourself. Using Chrome and Opera, you should Install the Chrome Web and ScriptSafe add-on in your browser. It can be installed in the Opera browser and disable WebRTC.

Secure Https Connection

During the study, it turned out that several sites of VPN companies operate using the HTTP protocol. Using such a connection is insecure, and allows you to intercept keys, and then decrypt all user's Internet traffic. Today, an essential prerequisite for site security is the use of the https protocol using SSL certificates, which will protect the receipt of keys and configuration files from the VPN provider to the user.

Vulnerabilities of Branded VPN Clients

For a more convenient connection to a VPN network, different companies offer their branded VPN clients. Using a corporate client is always easier and faster, but not always safer.

We found several VPN companies that use an unencrypted HTTP connection to the authorization server in their corporate clients. The danger may be the lack of encryption of the process of obtaining configuration files and keys. As a result, keys and configuration files can be intercepted by hackers and used to decrypt all Internet traffic.

It is possible to check VPN reviews to know whether data encryption is used with the help of various programs that allow you to intercept traffic. If no encryption is used, then you can find configuration files and keys in the intercepted data. And with encryption enabled, the received traffic will show a random set of data without indicating the content.

Shared and Individual Encryption Keys

Interesting details were found when checking out several large VPN providers. Many services practice the distribution of one key to all servers and users with a difference in the authorization process by login and password. In the case of hacking the login and password, the intercepted key will allow you to decrypt all Internet traffic of the user.

Some companies use different encryption keys for each user, but still with the same key for all servers. Only an individual key for each user and server can provide reliable protection. Thus, if user keys on one server are compromised, then connecting to another server will remain secure.

The Ability to Change The Key 

In the process of working on a computer, situations related to the loss of keys may arise. For such situations, some VPN providers offer users the ability to change keys without losing the subscription. In case of any suspicious incidents regarding information security, it is recommended to change VPN keys.

Saving of Logs

The question of logs is asked by all users when choosing a VPN provider. This is important because keeping the logs will allow providers to associate the client's actions on the Internet with his real IP address. The VPN provider can prove that the server does not save logs if it provides full root access for verification.

If it is not possible to check the verification mentioned above, pay attention to the physical location of the VPN company. The jurisdiction of offshore zones allows VPN providers not to save logs and not to depend on requests from foreign intelligence services.

DNS leak

In some VPN companies, when using OpenVPN on Windows 8 and 10, there is a risk of a leakage of the real DNS value. It is possible to verify the absence of a leak in DNS independently. To do this, you need to find the DNS in the configuration file received from the VPN provider. The presence of the block-outside-DNS option allows you to block DNS leakage automatically.

Reliability of Encryption Algorithms

Many VPN services often use insufficiently, reliable encryption methods, which saves server resources. Sometimes, at the expense of security, VPN companies continue to use PPTP, which has a number of vulnerabilities.

You should always pay attention to what technology and encryption algorithms the VPN provider uses. To achieve maximum reliability, it is recommended to use the OpenVPN technology with the AES 256 algorithm, Diffie-Hellman keys of 2048 bits and 512 MB hash algorithm.


We tried to show that users can check the security of their VPN provider services in simple and accessible ways. Therefore, the attractive price or the colorful design of the site of a popular VPN company will not mislead users for whom anonymity and security are essential.

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Categories: General
Companies: BitTorrent / Hulu / Netflix / Opera
Countries: World
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