Rule History

alert ftp $HOME_NET ![21,25,110,119,139,445,465,475,587,902,1433,2525] -> any any (msg:"ET HUNTING Suspicious FTP 220 Banner on Local Port (spaced)"; flow:from_server,established,only_stream; content:"220 "; depth:4; content:!"SMTP"; within:20; classtype:pup-activity; sid:2011124; rev:20; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)