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🗣 Wd提问: dns https

🤖 Ai回答:
It seems you're asking about DNS over HTTPS (DoH) — a security and privacy protocol that encrypts DNS queries using HTTPS、Here's a clear explanation:

🔐 What is DNS over HTTPS (DoH)?

DNS over HTTPS (DoH) is a protocol that encrypts Domain Name System (DNS) queries by sending them over an HTTPS connection、This prevents eavesdropping, manipulation, or spoofing of DNS data by third parties (like ISPs, hackers on public Wi-Fi, etc.).

🌐 Why Use DoH?

Traditional DNS queries are sent in plaintext (unencrypted), which can expose your browsing activity、DoH enhances:

Privacy: Your DNS queries can't be easily monitored.
Security: Protects against DNS spoofing and man-in-the-middle attacks.
Integrity: Ensures responses come from legitimate sources.

🛠️ How Does It Work?

Instead of sending DNS requests over UDP or TCP port 53, DoH sends them as encrypted HTTPS traffic (port 443):

User → [HTTPS Encrypted Request] → DoH Server → Internet

The DoH server resolves the domain and returns the IP securely.

🖥️ Where Is DoH Used?

Many modern browsers and operating systems support DoH:

Browsers:
Firefox: Enabled by default (uses Cloudflare).
Chrome / Edge: Supports DoH; may use Google Public DNS or others.

OS-Level:
Windows 11: Supports DoH via settings.
macOS: Supported since macOS 11 (Big Sur).
Android: Private DNS (a similar feature, often uses DoT or DoH).

🌍 Popular DoH Resolvers

| Provider | DoH Endpoint |

| Cloudflare | `https://cloudflare-dns.com/dns-query` |
| Google | `https://dns.google/resolve` |
| Quad9 | `https://dns.quad9.net/dns-query` |
| OpenDNS | `https://dns.opendns.com/dns-query` |

⚙️ How to Enable DoH

In Firefox:
1、Go to Settings → Network Settings
2、Check Enable DNS over HTTPS
3、Choose provider (e.g., Cloudflare)

In Windows 11:
1、Settings → Network & Internet → Wi-Fi/Ethernet
2、Click on your connection → Edit DNS settings
3、Set to Manual, choose HTTPS as type, enter a DoH address

Using Third-Party Tools:
Tools like dnscrypt-proxy or Stubby can enforce DoH system-wide.

⚠️ Limitations & Considerations

Bypasses local policies: May interfere with network filtering (e.g., parental controls).
Centralization risk: Many users rely on big providers like Cloudflare or Google.
Not always end-to-end: Only protects between client and DoH resolver.

✅ Summary

DNS over HTTPS (DoH) = Safer, private DNS lookups by encrypting them within HTTPS.

Use it to protect your browsing privacy — especially on untrusted networks.

Would you like help setting up DoH on a specific device or browser?

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