alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO JNLP embedded file"; flow:established,to_client; file_data; content:"jnlp"; content:"PD94bWwgdmVyc2lvbj0"; distance:0; classtype:bad-unknown; sid:2017197; rev:3; metadata:created_at 2013_07_26, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)