What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
A virtual private network (VPN) creates an encrypted connection between your device and a VPN server, then routes your internet traffic through that server. Websites generally see the server’s public IP address instead of your ordinary one. A VPN can improve privacy in some situations, but it does not make you anonymous: the VPN provider becomes an intermediary you must trust.
What does a VPN do?
A VPN does two main things: it encrypts traffic between your device and a VPN server, and it sends that traffic through the server before it reaches its destination. This can help shield your activity from observers on the local network and hide your ordinary public IP address from the websites and services you connect to.
VPNs serve different purposes. A consumer VPN app is generally used to route a person’s traffic through a provider’s servers. Organizations use VPNs to give employees access to internal systems while they are away from the office. The administrator, access rules and intended resources differ, so these are not interchangeable uses of the same service.
How does a VPN work?
- Your device connects to a VPN server. A VPN client on your computer or phone establishes a connection over your regular internet connection.
- The client encrypts traffic for the tunnel. Your internet service provider (ISP) can see that your device is communicating with a VPN endpoint, but the tunnel conceals the contents of that traffic from the ISP. Cloudflare’s VPN overview describes the route as passing through the ISP while the data is encrypted.
- The VPN server forwards traffic to its destination. The server decrypts the traffic it receives and sends it on to the website or service. The destination generally sees the VPN server’s public IP address as the source of the connection.
The VPN tunnel protects the device-to-provider leg; HTTPS separately protects web traffic between your browser and a website. They do different jobs, and a VPN does not replace HTTPS. For a technical overview of the tunnel and routing, see Mozilla’s explanation of VPNs.
#1 Best Overall
Why use a VPN?
Reach work resources remotely
A company VPN can let an employee outside the office connect to internal resources. Traditional organizational VPNs may grant access to a wider part of the network than an employee needs for a particular task, so organizations must manage identity, access scope and vulnerabilities. Cloudflare describes this perimeter-style model and how organizations may move toward more granular access in its VPN security overview and discussion of replacing traditional VPN access. These are enterprise design concerns; they do not mean every home user needs a different technology.
Add a layer of protection on unfamiliar networks
On a public or otherwise unfamiliar Wi-Fi network, a VPN encrypts the connection between your device and the VPN provider. That can reduce what a local network observer can learn from the traffic, but it is only one layer of protection. Keep your software updated, use HTTPS websites, and protect your accounts and credentials.
Rank #2
Obscure your ordinary IP address
When traffic exits through a VPN server, destination services generally receive the server’s IP address rather than your ordinary public IP address. This can obscure your network address and approximate location from those services. It does not stop a site from recognizing you through a signed-in account, cookies, browser fingerprinting or other tracking methods.
Use an endpoint in another location
Some consumer VPN providers offer servers in multiple locations. Connecting through one can make your IP address appear to come from that server’s location. A website or streaming service may still block VPN connections, so a different apparent location does not guarantee access.
What a VPN does not protect you from
- Identification through accounts: Signing in can identify you regardless of the IP address shown to the service.
- Cookies and browser fingerprinting: A VPN does not erase browser-based identifiers or stop every form of tracking.
- Risks beyond the tunnel: VPN encryption ends at the provider’s server. HTTPS remains important for protecting web content between your browser and the destination.
- Every security threat: A VPN is not a replacement for updates, secure account practices or careful handling of credentials.
What should you consider before using a VPN?
The provider becomes part of the trust chain
A VPN shifts trust away from the local network and ISP and toward the VPN provider, whose server receives and forwards your traffic. Before choosing a service, examine its privacy policy, logging claims, ownership, security practices and independent audits. Calling a service a VPN does not establish that it provides anonymity.
Performance and compatibility can change
Routing traffic through another server and encrypting it can add latency or reduce connection speed. Some apps and websites may behave differently or block VPN connections. A service’s available locations, device support and compatibility can therefore matter as much as its privacy claims.
Rank #4
Personal VPN use is not right for every threat setting
In its December 2024 mobile communications guidance, the U.S. Cybersecurity and Infrastructure Security Agency cautions against personal VPN use in the threat setting it describes and raises concerns about commercial providers’ security and privacy policies. That guidance is context-specific; it is not a blanket finding that every consumer VPN is harmful.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Do you need a VPN for public Wi-Fi?
A VPN can reduce the visibility of your traffic to observers on a local network by encrypting the device-to-provider connection. Whether you need one depends on your circumstances and whom you trust: with a VPN, the provider becomes the intermediary, and HTTPS still matters. A VPN does not protect you from every threat or eliminate the need for secure account practices.
Free tools Windows power users keep installed
One-click scans. No signup required.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
