alert tcp any any -> $HOME_NET 2404 (msg:"ET SCADA IEC-104 Clock Synchronization Command"; flow:established,to_server; content:"|68 14 00|"; fast_pattern; content:"|67|"; distance:3; reference:url,icsdefense.net/pcap; classtype:protocol-command-decode; sid:2046165; rev:2; metadata:affected_product IoT, attack_target IoT, created_at 2023_06_07, deployment Perimeter, deployment Internal, deployment Datacenter, performance_impact Moderate, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_31, reviewed_at 2024_10_01;)