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DNS over HTTPS (DoH) encrypts DNS requests to improve privacy and security in network-based deployments. DNSFilter supports DoH via the resolver endpoints https://doh.dnsfilter.com/dns-query (standard) and https://doh.netalerts.io/dns-query (whitelabeled)

Before configuring DoH, ensure the following:

• A Site in DNSFilter includes the public IP address
• A Filtering Policy is assigned to that Site

The DoH URL is also available in-app. Navigate to a Site's details and jump to Advanced to copy the URL.

Configure DoH in Browsers

1. Open Settings in the browser
2. Navigate to Privacy/Security settings
3. Enable Secure DNS / DNS over HTTPS
4. Select the option to manually configure the resolver
5. Enter the DoH address

Save the settings. DNS traffic will now route securely through DNSFilter using DoH.

Configure DoH in Windows

1. Open Windows Network Settings
2. Select the active network connection
3. Under DNS server assignment, select Manual
4. Enable IPv4
5. Toggle DNS over HTTPS to On (manual template)
6. Configure values:
   • Preferred DNS server: 103.247.36.150
   • DNS over HTTPS template: https://doh.dnsfilter.com/dns-query (standard)  https://doh.netalerts.io/dns-query (whitelabeled)

Save the settings. DNS traffic will now route securely through DNSFilter using DoH.

Configure DoH in macOS

1. Generate a mobileconfig profile configured for DNSFilter servers
   • Use a tool such as Simple DNS Plus
   • Configure the resolver to the DoH address
2. From System Settings, open Device Management
3. Install the generated DNS mobileconfig profile

Save the settings. DNS traffic will now route securely through DNSFilter using DoH.