alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL WEB_SERVER author.exe access"; flow:to_server,established; http.uri; content:"/_vti_bin/_vti_aut/author.exe"; nocase; classtype:web-application-activity; sid:2100952; rev:10; metadata:created_at 2010_09_23, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)