alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Java User Agent"; flow:established,to_server; content:"User-Agent|3a| Java/"; nocase; http_header; reference:url,www.useragentstring.com/pages/useragentstring.php; classtype:attempted-recon; sid:2013029; rev:2; metadata:created_at 2011_06_14, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)