GPL DNS named iquery attempt

Query · suricata

content:"|09 80 00 00 00 01 00 00 00 00|"; depth:16; offset:2;
Raw source GPL DNS named iquery attempt · 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 udp $EXTERNAL_NET any -> $HOME_NET 53 (
    msg:"GPL DNS named iquery attempt";
    content:"|09 80 00 00 00 01 00 00 00 00|"; depth:16; offset:2;
    reference:bugtraq,134;
    reference:cve,1999-0009;
    reference:url,www.rfc-editor.org/rfc/rfc1035.txt;
    classtype:attempted-recon;
    sid:2100252; rev:9;
    metadata:created_at 2010_09_23, cve CVE_1999_0009, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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