Network Captures Library
Explore our curated collection of real-world packet captures designed to illustrate key networking concepts, protocols, and anomalies. From DNS queries to TCP errors and security events, each capture is hand-picked to support learning, troubleshooting, and deep analysis.
🔄 This library is updated regularly — new captures are added over time to reflect key concepts, attack patterns, and diagnostic scenarios.
Perfect for network engineers, students, and curious explorers alike.
TCP Examples
TCP simple session
A simple example showing a TCP flow with handshake, data transfer and closing.
TCP Retransmission & Reset
Capture includes out-of-order packets, retransmits, and fast retransmission.
TCP Zero Window
TCP Zero Window is a condition where the receiving device tells the sender to pause sending data because its buffer is full.
DNS Examples
DNSSEC
DNSSEC (Domain Name System Security Extensions) is a security protocol that protects the DNS (Domain Name System) from attacks like spoofing or cache poisoning.