Wireshark • tcpdump • Packet Inspection
Packet Capture, Protocol Inspection & Threat Detection
Tool: Wireshark (#1 SecTools.org) • Skill Level: Intermediate • Defense: Detection
💻 Desktop Experience Available
View this module on desktop for an interactive packet analysis simulation with live Wireshark-style interface.
Network Traffic Analysis is the process of intercepting, recording, and analyzing network packets to detect malicious activity, troubleshoot issues, and understand communication patterns. Primary tool: Wireshark (#1 SecTools.org).
Why It's Essential: Network traffic is ground truth. Attackers must communicate—C2 callbacks, data exfiltration, lateral movement all generate packets. Wireshark reveals what firewalls and EDR miss. Used by blue teams, red teams, and SOC analysts daily.
Network traffic analysis should only be performed on networks you own or have explicit authorization to monitor. Intercepting traffic without permission violates wiretapping laws (ECPA, CFAA). Always follow your organization's policies and legal requirements.
Hunt malicious packets in real network traffic. Identify attack signatures, decode protocols, and separate threats from legitimate traffic. Every defender needs this skill.
ARP Spoofing Detection: Look for unsolicited ARP replies and duplicate MAC addresses for the same IP.
DNS Tunneling: High entropy in subdomains, unusual query lengths, and repeated queries to same domain indicate exfiltration.
Port Scanning: Sequential port probes at high rates from single source suggest reconnaissance activity.
Protocol Analysis: Understanding normal vs. abnormal traffic patterns is key to threat hunting.