alert ftp $EXTERNAL_NET any -> $HOME_NET any (msg:"GPL FTP satan scan"; flow:to_server,established; content:"pass -satan"; fast_pattern; reference:arachnids,329; classtype:suspicious-login; sid:2100359; rev:8; metadata:created_at 2010_09_23, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)