plaintext 5 lines · 1 tab

Wireshark display filters that speed up incident triage

Kai Nakamura Apr 2026

1 tab

http.response.code >= 400
tcp.analysis.retransmission
tls.alert_message
dns.flags.response == 1 && dns.a
ip.addr == 10.10.20.15 && tcp.port == 443

1 file · plaintext Explain with highlit

Display filters are how I turn a noisy packet capture into something useful fast. I keep a short set of patterns for TLS failures, retransmissions, HTTP errors, and suspicious DNS behavior. Filtering skill matters more than opening a giant capture file and scrolling randomly.

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