How a proxy works
A proxy server is a middleman for a single application. Your browser, or another app you configure, sends requests to the proxy, and the proxy forwards them to websites using its own IP address. The website replies to the proxy, which passes the response back to you.
Common types include HTTP proxies for web traffic, SOCKS5 proxies that can carry other kinds of traffic, and transparent proxies run by schools or companies that filter content without any setup on your device.
A proxy changes the visible IP but usually does not add its own encryption. If the site uses HTTPS, the content is still encrypted, but the proxy operator sees which sites you visit and can tamper with any unencrypted traffic.
How a VPN works
A VPN creates an encrypted tunnel at the operating-system level between your device and a VPN server. Every app’s traffic goes through it: browser, email, games and background services. Websites see the VPN server’s IP, and your Wi-Fi owner or internet provider sees only encrypted data going to the VPN.
Modern protocols such as WireGuard and OpenVPN are fast and secure. Good VPN apps also include a kill switch that blocks traffic if the tunnel drops, plus DNS and IPv6 leak protection.
The cost is a subscription, a small speed and latency penalty, and the need to trust the VPN provider with your traffic metadata.
Proxy and VPN side by side
The right choice depends on the job. For quick, low-risk tasks in one app, a proxy is enough. For privacy and security on every app, especially on public Wi-Fi, a VPN is the better tool.
Neither tool makes you anonymous. Cookies, logged-in accounts and browser fingerprinting still identify you to websites unless you address them separately.
- Encryption: VPN encrypts all traffic; most proxies add none.
- Coverage: VPN protects the whole device; a proxy covers one app.
- Speed: proxies can be faster; good VPNs are close behind.
- Cost: free proxies are common but risky; reputable VPNs are paid.
- Public Wi-Fi: VPN recommended; a proxy offers little protection.
- Testing websites from another region: either works.
Which should you use?
Use a VPN for public Wi-Fi, travel, everyday privacy from your internet provider and protecting every app on a phone or laptop. Use a proxy for web scraping and automation, testing how a site appears in another country, or routing a single app through a specific network.
Avoid free, unknown proxies for anything involving logins, payments or personal data. Free public proxies have been found injecting ads, logging traffic and stealing session cookies.
Businesses often use both: a corporate VPN for staff access and filtering proxies at the network edge.
How to check your proxy or VPN
With the proxy or VPN on, open an IP lookup and confirm that the address, provider and region changed. A VPN check can also tell you whether the new address is flagged as a hosting or VPN network, which explains why some sites challenge you.
Next, run a WebRTC leak test in the browser. Proxies in particular often leave WebRTC traffic outside the proxy, exposing your real public IP. Also check IPv6, which some proxies and VPNs fail to route.
IP lookup (via proxy): 198.51.100.20 Hosting provider, Germany
WebRTC candidate: 203.0.113.45 Home broadband, Vietnam <- real IP