alert dns $HOME_NET any -> any any (msg:"ET DYN_DNS DNS Query to DynDNS *.dyn-ip24 .de Domain"; dns.query; content:".dyn-ip24.de"; nocase; endswith; classtype:policy-violation; sid:2029638; rev:3; metadata:attack_target Client_Endpoint, created_at 2020_03_16, deployment Perimeter, former_category POLICY, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_11;)