Network Security Monitoring

The Foundation of Network Defense

You cannot defend what you cannot see. Network Security Monitoring (NSM) provides comprehensive visibility into all network traffic—who is communicating with whom, what data they're exchanging, and whether communications exhibit suspicious patterns. While firewalls and intrusion prevention systems block known threats, NSM detects unknown threats through traffic analysis and behavioral anomalies. This distinction is critical for defense networks facing advanced adversaries who develop custom malware and novel attack techniques specifically to evade signature-based defenses. NSM complements perimeter defenses by assuming some attacks will successfully penetrate, focusing on detecting adversaries through their network activity once inside your environment.

Full Packet Capture & Deep Analysis

Our NSM platforms perform full packet capture at network chokepoints, recording every byte traversing your network for forensic analysis. When security incidents occur, analysts can replay network traffic to determine exactly what adversaries accessed, what data they exfiltrated, and which command and control servers they connected to. Deep packet inspection analyzes application-layer protocols—HTTP, DNS, SMB, email—extracting files, reconstructing sessions, and identifying malicious content embedded in legitimate protocols. This granular visibility enables precise incident response, transforming vague 'possible compromise' alerts into definitive understanding of attack scope and impact.

Encrypted Traffic Analysis

Adversaries increasingly encrypt command and control communications to evade detection. Traditional network monitoring is blind to encrypted traffic—you see encrypted connections but cannot examine payload content. Our NSM solutions employ multiple techniques to analyze encrypted traffic without decryption. TLS fingerprinting identifies malware through SSL/TLS handshake characteristics. Certificate analysis detects suspicious or invalid certificates used by malware. Metadata analysis examines connection patterns, timing, and volume even when content is encrypted. For authorized inspection, SSL/TLS decryption capabilities integrate with enterprise PKI infrastructure, enabling deep inspection of encrypted traffic while maintaining audit compliance.

Anomaly Detection & Threat Hunting

Modern attacks don't always exhibit explicit malicious indicators—they blend into normal network traffic using legitimate protocols and common applications. Behavioral anomaly detection identifies threats through deviations from established baselines. Machine learning models recognize unusual data transfer volumes, atypical access patterns, or connections to geographic regions inconsistent with operational requirements. These anomalies guide threat hunting—proactive investigation seeking adversaries who have evaded automated detection. Hunters pivot from NSM data to endpoint logs to threat intelligence, correlating evidence across security platforms to confirm or refute compromise hypotheses.

Network Security Monitoring Features

• Full packet capture and network forensics
• Deep packet inspection across all protocols
• Encrypted traffic analysis and TLS inspection
• Behavioral anomaly detection with machine learning
• Integration with SIEM and threat intelligence
• High-speed sensors supporting 100 Gbps throughput
• Classified network deployment with air-gap support
• Threat hunting and investigation workbenches