Three architectures
A proxy configured in an application generally relays that application’s traffic. It can change the IP address seen by the destination, but its encryption depends on the protocol used between the client and the proxy.
A VPN covers traffic that the system or app routes through its tunnel. Tor Browser sends its browsing traffic through the Tor network, where several relays separate the origin from the destination as much as possible.
| Criterion | VPN | Proxy | Tor Browser |
|---|---|---|---|
| Typical scope | System or VPN app | Configured application | Browsing in Tor Browser |
| Intermediary | VPN provider | Proxy operator | Several relays |
| Speed | Variable | Variable | Often slower |
| Guaranteed anonymity | No | No | Not absolute |
Sources and references
When a VPN makes sense
A VPN is suitable for reducing exposure to the local network, using a different exit address and covering multiple applications with a native app. In return, the provider becomes a concentrated point of trust.
Review its data policy, jurisdiction, software scope and the way its claims are verified. A high or low price is not technical proof.
When a proxy is enough
A proxy can be useful for a need limited to one application or browser. It is easier to forget that another stream is not passing through it.
A VPN browser extension may technically behave like a secure proxy. It should then be described as browser protection, not as a tunnel for the entire device.
What Tor changes
Tor reduces the trust placed in any single relay: the entry relay knows your address without knowing the final destination, while the exit relay sees the destination without directly knowing your original address.
Tor Browser also changes browser behaviour to limit tracking. However, signing in to a personal account, extensively modifying the browser or opening a file outside Tor may reduce the intended benefits.
Choose based on the risk
For a public network and everyday applications, a properly configured VPN may be the most practical choice. For research requiring stronger separation between origin and destination, Tor may be more appropriate despite being slower.
For a single task in one application, a trustworthy proxy may be enough. In every case, keep using HTTPS and do not present any tool as a guarantee of anonymity.