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Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

Suricata - Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine.

tcpdump - tcpdump is a common packet analyzer that runs under the command line.

Next-Generation Intrusion Prevention System (NGIPS) - Cisco Firepower NGIPS (Next-Generation IPS) provides contextual awareness, security intelligence, and advanced threat protection against attacks and malware.

netcat - Netcat is a featured networking utility which reads and writes data across network connections...