Quick answer: Fake DNS helps proxy clients map virtual IPs back to domain rules, remote DNS reduces local resolver exposure, and DoH sends DNS queries over HTTPS. The best choice depends on routing rules, compatibility, and leak test results.
DNS settings can decide whether a proxy rule matches, whether a site opens, and whether the local network still sees your DNS requests. Fake DNS, remote DNS, and DoH solve different parts of that problem.
DNS modes compared
| Mode | Purpose | Watch out for |
|---|---|---|
| Fake DNS | Maps domains to virtual IPs for rule tracking | Compatibility with local apps and LAN services |
| Remote DNS | Resolves domains through the proxy side | Latency and route reliability |
| DoH | Sends DNS queries over HTTPS | The DoH request itself must follow the expected route |
When Fake DNS helps
- TUN mode needs to match IP connections back to domain rules.
- Rule-based routing depends on domain names.
- Traditional DNS pollution affects rule decisions.
- You can test and handle app compatibility issues.
When remote DNS or DoH helps
Remote DNS and DoH are easier to understand when your main concern is local DNS exposure. Remote DNS depends on the proxy route. DoH depends on whether the HTTPS DNS request itself is routed as intended.
Testing steps
- Start from a known working proxy or VPN configuration.
- Enable one DNS mode at a time.
- Run DNS leak tests after every change.
- Check local network apps if Fake DNS is enabled.
- Keep a backup configuration before changing advanced DNS fields.
Common questions
Is Fake DNS more private?
Not by itself. It is mainly a routing and mapping tool. Privacy depends on whether DNS requests leak and which resolver is used.
Does DoH always prevent DNS leaks?
No. If the DoH connection bypasses the proxy, the resolver may still see your original network.
Can DNS settings make the IP address unchanged?
Usually no, but bad DNS settings can make rules fail, sites open incorrectly, or leak tests look inconsistent.
Related technical guides
- DNS leak test guide
- VPN connected but IP not changing
- Mobile VPN keeps disconnecting
- VPN Kill Switch explained
- Proxy vs VPN comparison