alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN w3af User Agent"; flow:established,to_server; http.user_agent; content:"w3af.sourceforge.net"; depth:20; reference:url,w3af.sourceforge.net; classtype:attempted-recon; sid:2007757; rev:13; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_19;)