Rule History

alert udp $HOME_NET 123 -> $EXTERNAL_NET 123 (msg:"ET DELETED Potential Inbound NTP denial-of-service attempt (repeated mode 7 reply)"; dsize:4; content:"|97 00 00 00|"; threshold:type limit, count 1, seconds 60, track by_src; reference:url,www.kb.cert.org/vuls/id/568372; reference:cve,2009-3563; classtype:attempted-dos; sid:2010489; rev:2; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)