alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO JAVA - Java Archive Download"; flow:from_server,established; flowbits:isnotset,ET.http.javaclient.vulnerable; flowbits:isset,ET.http.javaclient; file_data; content:"PK"; within:2; content:".class"; nocase; fast_pattern; classtype:not-suspicious; sid:2014472; rev:9; metadata:attack_target Client_and_Server, created_at 2012_04_04, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_20; target:dest_ip;)