alert tcp any 2404 -> any any (msg:"ET SCADA IEC-104 TESTFR (Test Frame) Confirmation"; flow:established,to_client; dsize:6; content:"|68 04 83 00 00 00|"; reference:url,icsdefense.net/pcap; reference:url,github.com/automayt/ICS-pcap/tree/master/IEC 60870/iec104; classtype:protocol-command-decode; sid:2046159; rev:1; metadata:affected_product IoT, attack_target IoT, created_at 2023_06_06, deployment Perimeter, deployment Internal, deployment Datacenter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_07; target:src_ip;)