alert ftp $EXTERNAL_NET any -> $HOME_NET any (msg:"GPL FTP tar parameters"; flow:to_server,established; content:" --use-compress-program "; nocase; fast_pattern; reference:arachnids,134; reference:bugtraq,2240; reference:cve,1999-0202; reference:cve,1999-0997; classtype:bad-unknown; sid:2100362; rev:15; metadata:created_at 2010_09_23, cve CVE_1999_0202, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)