Calibrate
Measures the target before scanning and chooses an initial timeout and worker profile.
v0.1.0 · early release
Fast port discovery.
Even when the network isn’t.
Portis is an adaptive TCP port scanner for high-latency and unstable networks. It measures first, tunes itself, and hands confirmed ports to nmap.
Early release: Portis is under active development. New features, upgrades, broader testing, and further accuracy and performance tuning are planned for future releases.
$ ../portis -ip 10.129.18.76 -a
[portis · adaptive port scanner for slow networks]
[portis] Scan has started against 10.129.18.76
[portis] Calibrating against target network...
[portis] Profile: timeout=287.783082ms workers=628 samples=3
[portis] Worker utilization: 942/1048518 (0.09%)
[open] 21 (191.851264ms)
[open] 80 (190.741024ms)
[open] 443 (191.855388ms)
[open] 389 (194.502347ms, recovered)
[portis] 65536/65536 (100%) — 4 open, 65532 filtered, 0 closed — 2m1s elapsed
[portis] Open:21, 80, 443, 389
[portis] No closed ports found
[portis] Filtered:65532 hidden (use -vv to list)
[portis] Done in 2m1.734s
Next step:
Identify services: nmap -sC -sV -Pn -p 21,80,443,389 10.129.18.7601 / WORKFLOW
Measure. Adapt. Discover.
Portis is designed to complement nmap, not replace it.
Discover
Scans TCP ports concurrently, tuned for the observed network rather than a fixed preset.
Recheck
Moves uncertain responses through a separate retry path and adapts when replies slow down.
Hand off
Outputs the open-port set and suggests an nmap command for deeper enumeration.
02 / PRELIMINARY RESULTS
Built for difficult links.
Observed medians from authorized Hack The Box lab targets over a high-latency VPN.
Early benchmark data, not a universal performance claim. Full-range accuracy remains experimental; see the repository for methodology and limitations.
GET STARTED
One binary. No root required.
Linux AMD64 · IPv4 · TCP connect scanning
$ portis -ip 10.0.0.5 -port 1-1000↗