Minimizing the risks of using DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH)

DoH and DoT protection

Are you in control of your DNS traffic? Organizations invest a lot of time, money and effort in securing their networks. However, one area that is often overlooked is DNS.

A good overview of the risks posed by DNS is the Verisign presentation at the Infosecurity conference.

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• Configure NGFW to decrypt all traffic for destination port 853. By decrypting traffic, DoT will appear as a DNS application, to which you can take any action, for example, enable Palo Alto Networks DNS Security subscription   to control DGA domains or existing  DNS Sinkholing  and anti -spyware.

• Alternatively, the App-ID engine can completely block the 'dns-over-tls' traffic on port 853. It is usually blocked by default, no action is required (unless you specifically allow the 'dns-over-tls' app or port traffic 853).