alert tcp $EXTERNAL_NET any -> $HOME_NET 119 (msg:"GPL MISC AUTHINFO USER overflow attempt"; flow:to_server,established; content:"AUTHINFO"; nocase; content:"USER"; distance:0; nocase; isdataat:200,relative; pcre:"/^AUTHINFO\s+USER\s[^\n]{200}/smi"; reference:arachnids,274; reference:bugtraq,1156; reference:cve,2000-0341; classtype:attempted-admin; sid:2101538; rev:14; metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)