alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN Netsparker Default User-Agent"; flow:to_server,established; threshold:type limit,track by_src,count 1,seconds 60; http.user_agent; content:"|20|Netsparker)"; reference:url,www.mavitunasecurity.com/communityedition/; classtype:attempted-recon; sid:2011029; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2020_09_13;)