Rule History

alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:6; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)