In the Menu bar of the Firefox browser, click Firefox and select Preferences.DoH configuration on Mozilla Firefox (MAC): In this blog, we will talk about how to configure DoT/DoH on different browsers, OS and mobile devices. However, DoH uses the same TCP port used by other HTTP-S traffic, Port 443. Both DNS over TLS and DNS over HTTPS provide for encryption between the DNS client and the DNS server, enabling data privacy and integrity. Clients and Servers use TCP port 853 to establish a TLS session to secure the DNS traffic.ĭNS over HTTPS (DoH) is a second IETF security protocol that addresses DNC client and DNS server communication security. DNS over TLS (Transport Layer Security) or “DoT” is an IETF standard that provides full-stream encryption between a DNS client and a DNS server.
