ET INFO Observed Google DNS over HTTPS Domain (dns .google .com in TLS SNI)

Query · suricata

flow:established,to_server;
threshold:type both, track by_src, count 1, seconds 600;
tls.sni;
content:"dns.google.com"; depth:14; endswith;
Raw source ET INFO Observed Google DNS over HTTPS Domain (dns .google .com in TLS SNI) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO Observed Google DNS over HTTPS Domain (dns .google .com in TLS SNI)";
    flow:established,to_server;
    threshold:type both, track by_src, count 1, seconds 600;
    tls.sni;
    content:"dns.google.com"; depth:14; endswith;
    reference:url,developers.google.com/speed/public-dns/docs/doh/;
    classtype:misc-activity;
    sid:2046071; rev:3;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2019_08_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag DoH, updated_at 2023_06_05, former_sid 2838110;
)

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