alert ftp $EXTERNAL_NET any -> $HOME_NET any (msg:"GPL FTP FTP 'RETR 1MB' possible warez site"; flow:established,to_server; content:"RETR"; nocase; content:"1MB"; distance:1; nocase; classtype:misc-activity; sid:2100544; rev:8; metadata:created_at 2010_09_23, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_08;)