alert ftp $EXTERNAL_NET any -> $HOME_NET any (msg:"GPL FTP large PWD command"; flow:to_server,established; content:"PWD"; isdataat:7,relative; content:!"|0A|"; within:7; nocase; classtype:protocol-command-decode; sid:2101624; rev:9; metadata:created_at 2010_09_23, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)