alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY curl User-Agent Outbound"; flow:established,to_server; http.user_agent; content:"curl/"; nocase; startswith; reference:url,www.useragentstring.com/pages/useragentstring.php; classtype:attempted-recon; sid:2013028; rev:8; metadata:created_at 2011_06_14, deprecation_reason Performance, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_02;)