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🗣 Wd提问: dns https svc

🤖 Ai回答:
It looks like you're asking about DNS over HTTPS (DoH) and services related to it, possibly in the context of networking, security, or system administration、Let me break this down clearly:

🔹 What is DNS over HTTPS (DoH)?
DNS over HTTPS (DoH) is a protocol that encrypts DNS queries by sending them over an HTTPS connection instead of using traditional unencrypted DNS protocols.

Purpose: Enhance privacy and security by preventing eavesdropping and manipulation of DNS data.
How it works: Instead of sending DNS requests to a traditional DNS server via UDP/TCP port 53, the client sends them via HTTPS (port 443) to a DoH-enabled resolver (e.g., Cloudflare, Google, Quad9).
Example: `https://1.1.1.1/dns-query` (Cloudflare’s DoH endpoint).

🔹 Common Use Cases for DoH Services
Here are some popular DoH services (DNS resolvers):

| Provider | DoH Endpoint | Description |
|
| Cloudflare | `https://1.1.1.1/dns-query` | Fast, privacy-focused, no logging、|
| Google | `https://dns.google/dns-query` | Reliable, widely used、|
| Quad9 | `https://dns.quad9.net/dns-query` | Focus on security and malware blocking、|
| OpenDNS (Cisco) | `https://open.dns.getdnsapi.net/dns-query` | Enterprise-grade protection、|

🔹 How to Use DoH in Practice

1、In Browsers
Most modern browsers support DoH:
Firefox: Settings → Privacy & Security → DNS over HTTPS → Enable.
Chrome/Edge: Enabled by default if using Google's DoH (or can be configured via flags or policies).

2、On Linux (system-wide)
Use `systemd-resolved` or `dnsmasq` with DoH:
bash
Example: Configure systemd-resolved to use Cloudflare DoH
sudo nano /etc/systemd/resolved.conf

Add:
ini
[Resolve]
DNS=1.1.1.1
DNSOverHTTPS=yes
DNSOverHTTPSURL=https://1.1.1.1/dns-query

Then restart:
bash
sudo systemctl restart systemd-resolved

3、On Android/iOS
Android 9+: Built-in DoH support (via system settings or apps like NextDNS).
iOS: Uses iCloud Private Relay or third-party apps (e.g., 1.1.1.1 app).

🔹 Why Use DoH?
✅ Privacy: Prevents ISPs and attackers from seeing your browsing history、
✅ Security: Blocks DNS spoofing and man-in-the-middle attacks、
❌ Limitations: Can bypass network-level filtering (e.g., parental controls), and may reduce transparency.

🔹 Related Terms
DNS over TLS (DoT): Similar to DoH but uses TLS on port 853.
Split DNS: Using DoH only for certain domains while others go through local DNS.
DoH vs DoT: Both secure DNS, but DoH uses HTTP(S), making it harder to block.

If you meant something else (e.g., Kubernetes Service, DNS service discovery, or HTTP-based DNS APIs), please clarify!

Let me know:
Are you setting up a DoH server?
Want to configure a specific OS?
Looking for a DNS service provider?

I’ll help tailor the answer! 🛠️

Ai作答

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