ET INFO InetSim Response from External Source Possible SinkHole

Query · suricata

flow:from_server,established;
http.server;
content:"INetSim HTTP Server"; bsize:19;
Raw source ET INFO InetSim Response from External Source Possible SinkHole · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET INFO InetSim Response from External Source Possible SinkHole";
    flow:from_server,established;
    http.server;
    content:"INetSim HTTP Server"; bsize:19;
    classtype:bad-unknown;
    sid:2017363; rev:3;
    metadata:created_at 2013_08_21, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;
)

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