Internet Protocol (IP) address is a unique number assigned by ISPs or private network administrators to each device connected to the internet. By functions, an IP address is somewhat similar to your physical address. It identifies the user and allows their devices to establish connections within the network.
As you can imagine, an IP address can reveal a lot of vital information about you - your ISP, physical location, postal code, etc. That’s why security-conscious netizens turn to VPN Unlimited® to mask their IPs.
But alas, IP leaks can sometimes compromise you even while using a VPN, that’s why it’s so important to stay aware of them and know how to avoid them. And the first step is to check if there’s a leak present in the first place, using the big blue button above.
DNS, or domain name system, is a system that translates domain names into numerical IP addresses used for identifying and locating devices and services on the internet. Whenever you enter a URL address into your browser, it reaches a DNS server that retrieves from the database a unique IP address corresponding to the URL and sends it back. Under usual conditions, that is when no VPN is used, DNS requests are sent to your ISP’s DNS servers. Since DNS connection is normally unencrypted, ISP can see all the sites and services you connect to.
VPN services offer their own DNS servers, so that all DNS requests a device sends go within a VPN tunnel along with all the other traffic generated by the device. Ideally, it should work, but sometimes DNS requests may still be sent in the open to an ISP’s server. This is called a DNS leak. This issue is mostly relevant for Windows users and Windows 10 users in particular. This is because Windows 10, seeking to optimize performance, sends DNS queries in parallel using all available channels, including those outside a VPN tunnel, and chooses the fastest.
WebRTC is a technology that allows web-browsers to have direct P2P communication within a web page, which would otherwise require installing third-party plugins. It improves browser-to-browser communication, and due to how convenient it is, WebRTC is built in most modern popular browsers. The problem is that this program doesn’t require the user’s consent, and can be abused to reveal their real IP address. What’s worse, even a launched VPN can’t protect you from that!
Luckily, there are ways to prevent WebRTC leaks. You can use this guide to learn how to prevent WebRTC leaks in your browser.
However, the most convenient option is to simply install VPN Unlimited® browser extension and turn on the WebRTC Leak Prevent option in the settings.