Windows 10 uses HTTPS support to get DNS, how to test

Microsoft has announced that the first support for DNS over HTTPS (DoH) is now available in Windows 10 Insider Preview Build 19628 for Windows insiders in the fast ring.

The inclusion of the DoH protocol in the future version of Windows 10 was announced by Redmond in November 2018, with DNS over TLS (DoT) also remaining on the table.

DoH allows DNS resolution over encrypted HTTPS connections, while DoT is designed to encrypt DNS queries using the Transport Layer Security (TLS) protocol rather than using plain text DNS queries.

By supporting Windows 10 Core Networking through the Department of Health, Microsoft improves the security and privacy of its customers on the Internet by encrypting their DNS queries and automatically deleting open-text domain names that normally occur in unprotected web traffic.

If you weren’t expecting it and are wondering what DoH is, be aware that this feature will change the way your device connects to the Internet and is at an early stage of testing, so don’t proceed unless you’re sure you’re ready, Microsoft explains.

How can the Ministry of Health be revised now?

Although DoH support is included in Windows 10 Insider Preview Build 19628, this feature is not enabled by default, and insiders who want Windows to use encryption for DNS queries must accept it.

If you are a Windows insider and want to start testing DoH right away on a Windows 10 device, first make sure you are in the Fast Ring and using Windows 10 Build 19628 or later.

In order to activate the Ministry of Health, the following procedure must be carried out:

– Open Register Editor
– Switch to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesDnscacheParameters-Registry key
– Create a new DWORD value named EnableAutoDoh
– Set the value to 2

Windows 10 uses HTTPS support to get DNS, how to test Activate AutoDoh registration code (Microsoft)

Once the Windows 10 DoH client is enabled, Windows will automatically start encrypting your DNS queries if you use any of these DoH-compatible DNS servers:

Server owner IP addresses of the servers
Cloudburst 1.1.1.1
1.0.0.1
2606:4700:4700::1111
2606:4700:4700::1001
Google 8.8.8
8.8.4.4
2001:4860:4860::8888
2001:4860:4860::8844
quad9 9.9.9
149.112.112
2620:fe::fe
2620:fe::9

You can configure Windows to use one of these IP addresses as a DNS server through the Control Panel or the Settings application, Microsoft explains.

The next time the DNS service reboots, we will start using DoH instead of regular DNS on port 53 to communicate with these servers. The easiest way to restart the DNS service is to restart the computer.

To add your own DNS servers from the Windows Control Panel, follow these steps:

– Go to Network and Internet -> Network and Sharing Center -> Change Adapter Settings.
– Right-click on the connection to which you want to add the DNS server and select Properties.
– Select Internet Protocol version 4 (TCP/IPv4) or Internet Protocol version 6 (TCP/IPv6) and click Properties.
– Make sure the Use the following DNS server addresses check box is selected and paste the DNS server address into the fields below.

How do you check if DoHworks?

To check if the Windows DoH client is doing its job, you can use the PacketMon utility to check if there is online traffic on port 53 – once DoH is enabled, there should be little or no traffic.

To do this, open the command line or PowerShell window and run the following commands to reset PacketMon network traffic filters, add a traffic filter for port 53 (used for unencrypted DNS queries), and start recording the traffic in real time.

remove pktmon filter
add pktmon filter -p 53
pktmon start –etw -m in real time

Microsoft also provides instructions on how to test the DoH client by manually adding DoH-compatible DNS servers that are not on the default self-advertising list.

Windows 10 uses HTTPS support to get DNS, how to test

Acceptance, testing and future planning

Mozilla has already implemented the DNS-over-HTTPS standard for all Firefox users in the US who are over 25 years old. February 2020 by enabling Cloudflare’s DNS provider and enabling users to switch to NextDNS or another custom provider via their browser’s network settings.

Google also offers a limited trial of DoH on all platforms (except Linux and iOS), starting with Chrome 79.

However, unlike Mozilla, Google does not automatically change DNS provider, but only updates Chrome’s DNS resolution protocol if the standard DNS provider is supported by the Ministry of Health.

Last month, CIOs of U.S. government agencies also recommended that encrypted third-party DNS services be disabled until an official federal government DNS resolution service is ready to support HTTPS (DoH) and TLS (DoT) DNS.dns over https chrome,dns leak test