alert tcp $EXTERNAL_NET any -> $HOME_NET 4333 (msg:"ET SCAN Suspicious inbound to mSQL port 4333"; flow:to_server; flags:S; threshold:type limit, count 5, seconds 60, track by_src; classtype:bad-unknown; sid:2010938; rev:4; metadata:created_at 2010_07_30, deprecation_reason Performance, confidence Medium, signature_severity Informational, updated_at 2024_07_02;)