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Definition
A VPN is a service that creates an encrypted tunnel between your device and a remote server, so your internet traffic is hidden from your local network and your public IP address is replaced with the server's address.
Simple explanation
Normally, your internet provider and any network you connect to (café Wi-Fi, an office router) can see which sites and services you're connecting to. A VPN wraps that traffic in an encrypted tunnel, so the local network only sees an encrypted stream going to the VPN server.
From the perspective of any website you visit, your traffic appears to come from the VPN server's location rather than your own device, which is why VPNs are also used to change apparent location for content or shopping purposes.
Why it matters
On untrusted networks — public Wi-Fi, hotel internet, shared offices — a VPN prevents others on that network from snooping on unencrypted traffic or targeting your device directly.
It also limits what your internet provider can see and log about your browsing, which matters in regions where ISPs sell or are required to retain that data.
How it works
- 1ConnectionYour device establishes an encrypted tunnel to a VPN server.
- 2EncryptionAll outgoing traffic is encrypted before it leaves your device.
- 3RelayThe VPN server decrypts and forwards your traffic to its destination on the open internet.
- 4IP maskingWebsites see the VPN server's IP address instead of yours.
- 5Return pathResponses travel back through the same encrypted tunnel to your device.
Real examples
Products named for illustration only. Inclusion is not an endorsement.
- MullvadPrivacy-focused VPN with no account email required.
- ProtonVPNBuilt by the team behind Proton Mail, with a no-logs policy.
- NordVPNLarge consumer VPN provider with broad server coverage.
- WireGuardAn open-source VPN protocol used by many modern providers for speed and simplicity.
Advantages
- Encrypts traffic on untrusted or public networks.
- Hides browsing activity from your local internet provider.
- Masks your IP address from the sites and services you connect to.
- Can allow access to region-specific content or services when travelling.
Limitations
- Shifts trust to the VPN provider, who can technically see your traffic unless they enforce a strict no-logs policy.
- Doesn't protect against malware, phishing, or account compromise.
- Can reduce connection speed, especially over distant servers.
- A privacy VPN is a different tool to a gaming route optimiser — it prioritises encryption and IP masking over minimising in-game latency, and using one for the other's purpose can disappoint.
Common misunderstandings
- ClaimA VPN makes you completely anonymous online.RealityIt hides your IP from sites you visit and your traffic from your local network, but logins, cookies and browser fingerprinting can still identify you.
- ClaimAny VPN will reduce gaming lag or improve matchmaking routes.RealityA general-purpose privacy VPN is built for encryption and IP masking, not for optimising game server routes — that is the job of a dedicated gaming route optimiser.
Used in these reviews
VPN appears in these Tool Money Lab reviews. Handy if you want to see the concept in a real product context.
Frequently asked questions
Does a VPN protect me from viruses or phishing?
No — a VPN encrypts and reroutes traffic, but it does not scan for malware or block phishing sites on its own.
Can my internet provider see what I do if I use a VPN?
They can see that you're connected to a VPN server, but not the content or destination of your traffic within the encrypted tunnel.
Do free VPNs come with trade-offs?
Often yes — some free VPNs monetise through logging and selling usage data, which undermines the privacy benefit.
Should I use a VPN for online banking?
It's optional on a trusted home network, but useful on public Wi-Fi where local snooping is a real risk.
Is using a VPN legal?
In most countries yes, though a small number of countries restrict or ban VPN use — check local regulations before travelling.
The Tool Money Lab perspective
When we review VPNs, the no-logs policy and its independent audits matter more than marketing claims about server count or speed, because the whole value proposition rests on the provider not recording what it can see.
We're careful to separate privacy VPNs from gaming-focused routing tools in our coverage — they solve different problems, and recommending one for the other's use case does readers a disservice.
Conclusion
A VPN encrypts your traffic and masks your IP address by routing it through a remote server, protecting you from local snooping and hiding your browsing from your internet provider.
It is a privacy tool, not an anonymity or performance tool — for gaming route optimisation specifically, a dedicated tool built for that purpose is the more suitable choice.