ET INFO TRR DNS over HTTPS detected

Query · suricata

flow:established,to_server;
http.header;
content:"application/dns-udpwireformat";
Raw source ET INFO TRR DNS over HTTPS detected · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO TRR DNS over HTTPS detected";
    flow:established,to_server;
    http.header;
    content:"application/dns-udpwireformat";
    reference:url,tools.ietf.org/html/draft-ietf-doh-dns-over-https-02;
    classtype:misc-activity;
    sid:2025980; rev:3;
    metadata:tls_state TLSDecrypt, created_at 2018_08_07, deployment Perimeter, confidence High, signature_severity Informational, tag DoH, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_02;
)

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