LZR

Detects and fingerprints unexpected services on unexpected ports, working alongside ZMap scans.

Desktopfree

LZR is an open-source scanning tool that identifies and fingerprints services running on unexpected ports. It works with ZMap to intercept connections, recognising up to 18 protocols at once with two extra packets and fingerprinting more than 35, and can complete full application-layer handshakes with ZGrab. It is aimed at researchers doing internet-wide measurement and security scanning.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of LZR - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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