IP Fragmentation Attacks
IP fragmentation attacks exploit how fragmented packets are reassembled, filtered, or processed to evade controls or exhaust resources.
Mechanism
Different network devices may normalize or inspect fragments differently, creating visibility gaps or resource pressure.
Indicators to watch
Malformed fragments, overlapping offsets, unusual fragment rates, reassembly failures, and IDS/firewall discrepancies.
Concept diagram
Defensive controls
Normalize or drop malformed fragments, patch network devices, tune inspection systems, and monitor fragmentation anomalies.
Recommended security control
IDS + packet capture
Use crafted packets only in an isolated lab.
Defense tool
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All attack descriptions are for defensive education. Test scanning, traffic generation, interception, wireless testing, and vulnerable applications only on systems and networks you own or are explicitly authorized to assess.