Part of a VPN's privacy protection comes from hiding your real IP address, so it's important to understand that IP addresses can "leak". In particular it stops them looking at your DNS traffic, which can reveal which websites you're visiting. The encrypted tunnel between you and your VPN provider stops your ISP, rogue Wi-Fi hotspots or other interlopers snooping on your traffic.Because your connection joins the Internet from your VPN provider, you use an IP address assigned by your VPN provider, rather than your router's, on the Internet.This protects your privacy in a few different ways. When you use a VPN, you create an impenetrable, encrypted tunnel between your computer and your VPN provider, and then join the Internet from one of your VPN provider's computers. Because you have to tell all the websites and services you use what your IP address is, it can be used by advertising and tracking services to track you across the web, either on its own or as part of a fingerprint. ![]() They are allocated geographically, so they can be used for a form of crude geolocation.IP addresses are necessary for getting your Internet traffic to the right place, and getting the responses back to you, but they have a couple of drawbacks: The IP address is allocated from a pool of addresses your ISP controls, so it can change from time to time, but it probably doesn't change very often. Every device in your home that connects through that router uses its IP address on the Internet. Your Internet Service Provider (ISP) assigns a unique IP address to your router, the device that connects the computers, phones, and tablets in your house to the Internet. Performing a VPN test or two can help you ensure that it's up to the mark. It should do this without slowing your Internet too noticeably. The primary function of a Virtual Private Network (VPN) is to enhance your online privacy and security.
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