opscan

A open port scanner.

Install

With cargo

cargo install --force opscan

With docker

docker run --rm -it sigoden/opscan opscan.nmap.org

Binaries on macOS, Linux, Windows

Download from Github Releases, unzip and add opscan to your $PATH.

Usage

A open port scanner

Usage: opscan [OPTIONS] [ADDRESSES]...

Arguments:
  [ADDRESSES]...  CIDRs, IPs, or hosts to scan ports

Options:
  -p, --ports <PORTS>              Ports to be scanned e.g. 22,80-443,top100
  -t, --timeout <TIMEOUT>          Maximum time in milliseconds to scan
  -c, --concurrency <CONCURRENCY>  Number of concurrent port scanning
  -h, --help                       Print help
  -V, --version                    Print version

Check if a port is open:

opscan scanme.nmap.org -p 80

Scan top-N ports on a domain:

opscan scanme.nmap.org -p top100 
opscan scanme.nmap.org -p top666
opscan scanme.nmap.org -p top1000

List open ports on localhost:

opscan                             # equal to `opscan 127.0.0.1 -p 1-65535`

Scan specific ports:

opscan 192.168.8.5 -p 80,443,3000-6000
opscan 192.168.8.5 -p 1-65535

Scan specific CIDRs:

opscan -p 22 192.168.8
opscan -p 22 192.168.8.0/24
opscan -p 22 192.168.8.0/192.168.255.255

Default scan ports and timeouts on private/non-dedicated networks:

opscan 127.0.0.1                   # ports: 1-65535, timeout: 1000
opscan scanme.nmap.org             # ports: top1000, timeout: 3000

Increase concurrency and decrease timeout for faster scans:

opscan scanme.nmap.org -t 1500 -c 8000

License

Copyright (c) 2023 opscan-developers.

opscan is made available under the terms of either the MIT License or the Apache License 2.0, at your option.

See the LICENSE-APACHE and LICENSE-MIT files for license details.