InfraGuard

Detection rule: Header Length Anomaly

TCP/IP header length too small or spec-violating.

WarningPacket DecodeSuricata

What it detects

TCP/IP header length too small or spec-violating.

Why it fires

Possible corruption, fragmentation tricks or decoder evasion.

Worst case

Decoder evasion

Matching signatures

header length too smallinvalid length

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