alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO ZoneAlarm Download Flowbit Set"; flow:established,to_server; http.uri; content:"pkg"; http.host; content:"zonealarm.com"; endswith; flowbits:set,ET.ZoneAlarm.Site.Download; flowbits:noalert; classtype:misc-activity; sid:2022285; rev:3; metadata:created_at 2015_12_18, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_16;)