alert dns $HOME_NET any -> any any (msg:"ET POLICY DNS Query to DynDNS *.dyn-ip24 .de Domain"; dns.query; content:".dyn-ip24.de"; nocase; endswith; classtype:policy-violation; sid:2029638; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_03_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_09;)