DNS resolution home network access public DNS practice

0x00. Preface

The last article introduced HTTPDNS & Private DNS, Let's talk about it alone in this article Public DNS, First, simply post a few screenshots of the official website

0x01. Public domain name resolution Public DNS

1. macOS Set up Public DNS

I use macOS, Just place the console's DNS Address （ such as IPv4 + IPv6） Fill in the network settings DNS In the server , That's it

Is it simple , And you can see in the console ： The device is currently in use Public DNS Professional configuration

2. iOS Set up Public DNS

It's also in DNS Add to the server

3. Android Set up Public DNS

You can fill in two DNS1 and DNS2, It is recommended to write one for each IPv4 and IPv6 Of

4. SmartDNS Additional Public DNS

Careful people may have found the above iOS and Android In the screenshot of , Actually DNS The address is 192.168.25.238 instead of Public DNS

This is to facilitate centralized management , I built one on the red hat machine at home SmartDNS service , As all monks are wide DNS The most upstream of the request

SmartDNS Address ：https://github.com/pymumu/smartdns

You can also refer to the previous articles ： be based on Cloudflare Gateway + SmartDNS + AdGuard The household DNS programme

And video introduction ： be based on 1.1.1.1+SmartDNS+AdGuard The household DNS programme

Actually SmartDNS Upstream addition of Public DNS Just fine , You can see that there are multiple upstream configurations ,udp、tls、https There are all three types

0x02. Public domain name resolution Public DNS Set up interception

Other additional functions can be seen in the control panel , It is more humanized than other upstream only providing parsing

such as , The interception function can be enabled for different policy lists

Or customize the blacklist , Intercept specific sites , I added one here fake.site, You won't be able to access

The white list is OK , I added one here real.site, Normal access

0x03. Public domain name resolution Public DNS Set custom resolution

Be similar to Private DNS, Want to access the virtual machine through a specific host name in your home network , This can be achieved by setting custom parsing

such as rpi-slave.yuangezhizao.cn Through the home network Public DNS It can be parsed normally , But other parsers cannot , In line with expectations

0x03. Public domain name resolution Public DNS Operation and maintenance audit

It can be seen from the statistics page that the peak value of this month is 6/8 Japan , And no more than 1250k

And the domain name and client TOP polymerization

The reason why the equipment can see smartdns Is in DNS-over-HTTPS The name prefix... Is specified

Use DoH The configuration of , Custom device flags can be added to the configuration , So as to accurately identify the access of the device

You can see all of them in the audit log DNS Parsing records , You can view a specific time , Which requests are initiated by a particular device

0x04. Postscript

He thinks Public DNS Is the most practical function , No cloud computing threshold , Ordinary individual users can enjoy the service through simple network settings

And I have used it for a long time , For example, it can be seen from the statistics that the resolution of this month has been used 24,557,475, Although there are more than 3,000,000 Time limit , However, there is no charge during the public beta , Very conscientious