alert tcp $EXTERNAL_NET any -> $HOME_NET 513 (msg:"GPL EXPLOIT rsh froot"; flow:to_server,established; content:"-froot|00|"; fast_pattern; reference:arachnids,387; classtype:attempted-admin; sid:2100604; rev:7; metadata:created_at 2010_09_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)