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2026-07-02 12:31:49 -04:00

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naabu Naabu port-scanning syntax with host input, scan-type, verification, and rate controls.

Naabu CLI Playbook

Official docs:

Canonical syntax: naabu [flags]

High-signal flags:

  • -host <host> single host
  • -list, -l <file> hosts list
  • -p <ports> explicit ports (supports ranges)
  • -top-ports <n|full> top ports profile
  • -exclude-ports <ports> exclusions
  • -scan-type <s|c|syn|connect> SYN or CONNECT scan
  • -Pn skip host discovery
  • -rate <n> packets per second
  • -c <n> worker count
  • -timeout <ms> per-probe timeout in milliseconds
  • -retries <n> retry attempts
  • -proxy <socks5://host:port> SOCKS5 proxy
  • -verify verify discovered open ports
  • -j, -json JSONL output
  • -silent compact output
  • -o <file> output file

Agent-safe baseline for automation: naabu -list hosts.txt -top-ports 100 -scan-type c -Pn -rate 300 -c 25 -timeout 1000 -retries 1 -verify -silent -j -o naabu.jsonl

Common patterns:

  • Top ports with controlled rate: naabu -list hosts.txt -top-ports 100 -scan-type c -rate 300 -c 25 -timeout 1000 -retries 1 -verify -silent -o naabu.txt
  • Focused web-ports sweep: naabu -list hosts.txt -p 80,443,8080,8443 -scan-type c -rate 300 -c 25 -timeout 1000 -retries 1 -verify -silent
  • Single-host quick check: naabu -host target.tld -p 22,80,443 -scan-type c -rate 300 -c 25 -timeout 1000 -retries 1 -verify
  • Root SYN mode (if available): sudo naabu -list hosts.txt -top-ports 100 -scan-type syn -rate 500 -c 25 -timeout 1000 -retries 1 -verify -silent

Critical correctness rules:

  • Use -scan-type connect when running without root/privileged raw socket access.
  • Always set -timeout explicitly; it is in milliseconds.
  • Set -rate explicitly to avoid unstable or noisy scans.
  • -timeout is in milliseconds, not seconds.
  • Keep port scope tight: prefer explicit important ports or a small -top-ports value unless broader coverage is explicitly required.
  • Do not spam traffic; start with the smallest useful port set and conservative rate/worker settings.
  • Prefer -verify before handing ports to follow-up scanners.

Usage rules:

  • Keep host discovery behavior explicit (-Pn or default discovery).
  • Use -j -o <file> for automation pipelines.
  • Prefer -p 22,80,443,8080,8443 or -top-ports 100 before considering larger sweeps.
  • Do not use -h/--help for normal flow unless absolutely necessary.

Failure recovery:

  • If privileged socket errors occur, switch to -scan-type c.
  • If scans are slow or lossy, lower -rate, lower -c, and tighten -p/-top-ports.
  • If many hosts appear down, compare runs with and without -Pn.

If uncertain, query web_search with: site:docs.projectdiscovery.io naabu <flag> usage