ET POLICY Possible IP Check api.ipify.org

Query · suricata

flow:established,from_server;
tls.cert_subject;
content:"CN=api.ipify.org";
Raw source ET POLICY Possible IP Check api.ipify.org · 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 tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET POLICY Possible IP Check api.ipify.org";
    flow:established,from_server;
    tls.cert_subject;
    content:"CN=api.ipify.org";
    classtype:policy-violation;
    sid:2019512; rev:4;
    metadata:created_at 2014_10_27, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_20;
)

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