Whenever we surf the Internet we may have certain privacy problems. It is a reality that our data has great value. They can use them for a wide variety of purposes, such as including them in spam campaigns or even spoofing their identity. Simply by visiting a website or using any online service we can have problems. Hence, many users choose to make the connection more anonymous. We can use certain tools, such as a VPN. However, sometimes it is not enough. We are going to explain how to perform a DNS leak test .
Why it is important to encrypt all traffic correctly
When we use some kind of programs like VPN or proxy services , it is essential that they work properly. Otherwise they could leak information such as DNS. In this way we would not be anonymous and the servers we visit would know where we are and could obtain information.
Therefore, when we use a VPN, for example, it is interesting to check that it works correctly. It would be useless if you have vulnerabilities that can be exploited or leak data, as we have mentioned.
This is something that could happen especially when using free programs that do not have adequate security measures. They could have uncorrected problems or even be used for profit to precisely collect the data of the users who install it.
Luckily we have certain tools that also help us to check the proper functioning. We can simply run a test and see if the DNS is leaking or if, on the contrary, everything works correctly.
Test to check DNS leaks
In this sense we have a wide range of possibilities. We can use different tools that are on the Internet and that are free. Its operation is very simple, since they only indicate the DNS that we are using, as well as the location where we are. If for example we are in Spain but we have a VPN installed to simulate that we are in Germany and when performing a test it appears that we are in Spain, something is wrong.
The DNSLeakTest web page is one of the options we have available. It is very easy to use. You just have to enter it and it will automatically show us our IP address and the location where it is located.
If we are using a VPN connected in another country, it should appear that we are in that nation. In our case we have tested a VPN service that simulates that we are in the Netherlands. By accessing this site, as we can see in the image below, it shows us that we are indeed there.
You have several options. One of them is the standard one, which only shows us what we have seen in the image, while another option is an extended test, which is more complete and also takes longer to give the results.
A very similar option is DNSLeak . As soon as you enter, it will tell us what the IP address it has detected is. Next we simply have to click Start and perform an analysis to see if there is any DNS leak.
Another free and easy-to-use page that we have at our disposal to check for possible DNS or IP address leaks is IPLeak . As soon as you enter, it analyzes the IP and DNS that we have.
In our case, with a VPN configured on this occasion to simulate being in the United States, it appears that we are in that country. As we can see, it indicates that everything is correct and that there is no type of leak that could damage privacy.
We can also use the Perfect Privacy page. It has a function to check DNS leaks , view the IP address and perform a WebRTC test. The objective, as in the previous cases, is to verify that everything works correctly and that our privacy is not compromised when using a VPN.
Ultimately, these are some options we have to check if there are DNS leaks in our connection. The mission of these pages is to allow us to know what IP address and DNS can register the sites we visit. This way we will know if the VPN we are using works well or we should change to another.