alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[PUREFTPD] Authentication failed"; content: "[WARNING] Authentication failed for user"; classtype: unsuccessful-user; program: pure-ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000217; sid: 5000217; rev:2;)
-- Main.Sagan-Wiki-Add - 2015-10-21
New revisions of 5000217 will be below...