Public DNS Access Guide

Overview

This document describes how to access Public DNS from your computer system.

Directions

This document provides the following three computer system access methods:

Windows 10

1. Click the network connection icon in the bottom-right corner of the taskbar, and then click Network & Internet settings to open the "Network status" page as shown below:

2. Click Network and Sharing Center. On the opened "Network and Sharing Center" page, click Ethernet as shown below:

3. On the opened Ethernet Status page, click Properties as shown below:

4. In the Network tab, under This connection uses the following items:, double-click Internet Protocol Version 4 (TCP/IPv4) as shown below:

5. In the General tab, click Use the following DNS server addresses, and then enter 119.29.29.29 in Preferred DNS server as shown below:
   

6. Click OK to save the change and exit. At this point, you have connected to Public DNS on Windows 10.

Linux

Note:
Please switch to the root user first. In addition, please ensure that the server can access the public UDP and TCP port 53 normally.
The following takes CentOS 7 as an example.

1. Run the command vim /etc/nsswitch.conf, modify the following content, save the change, and exit. The following content indicates that the configuration of the /etc/hosts file will be used first before the DNS record is used.
   

2. Run the command vim /etc/resolv.conf to configure the preferred nameserver as 119.29.29.29, save the change, and exit. At this point, you have connected to Public DNS on Linux as shown below:

Note: if the nscd service is enabled on the server, we recommend you disable it or its domain cache feature to avoid exceptions.
How to disable domain cache: run the command vim /etc/nscd.conf, open the nscd.conf file, and set enable-cache hosts to yes. After making the change, restart the nscd service.

macOS

1. In the macOS system menu, select System Preferences as shown below:

2. On the opened "System Preferences" page, click the Network icon as shown below:

3. Select the network connection service you want to modify or currently in use (such as Wi-Fi or Ethernet) from the list, and then click Advanced as shown below:

4. Select the "DNS" tab, click + in the bottom-left corner of DNS Server, add 119.29.29.29, and click OK in the bottom-right corner. At this point, you have connected to Public DNS on macOS as shown below: