IoT Network Security Analysis with ntopng
Challenge: Unidentified IoT device on home network exhibiting suspicious command-and-control (C2) behavior with potential data exfiltration.
Approach: Deployed ntopng network traffic monitoring platform to analyze real-time packet flows, identify malicious communication patterns, and map device behavior to MITRE ATT&CK framework tactics.
Solution:
- Configured ntopng for deep packet inspection across all network segments
- Identified IoT device communicating with suspicious external IPs on non-standard ports
- Mapped behavior to MITRE ATT&CK T1071 (Application Layer Protocol) and T1041 (Exfiltration Over C2 Channel)
- Isolated compromised device and implemented network segmentation
- Created firewall rules blocking unauthorized outbound connections
Technologies Used:
Outcome: Neutralized potential data breach, implemented network segmentation for IoT devices, and established ongoing monitoring to detect future anomalies.
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