PORTFINDER

Portfinder is a powerful asynchronous port scanner for Python that allows you to quickly scan multiple targets with flexible configuration options.

Navigation

• Features
• Installation
• Command Line Usage
  • Basic Scan
  • Advanced Scan
  • Arguments
• Python API
• Output Formats
• License

Features

• Scan multiple IPs, CIDR ranges or domains
• Custom port ranges support (e.g., 1-1000,3389,8080)
• Protocol-specific scanning (TCP, UDP, HTTP, HTTPS)
• High-performance async I/O implementation
• Multiple output formats (JSON, JSON Lines, plain text)
• Quiet mode for scripting

Installation as Python Library

pip install portfinder

run basic scan

portfinder -t example.com

advanced scan

portfinder -t 192.168.1.1,10.0.0.0/24,example.com -p 1-1024,3389,8080 -P http -T 1.5 -c 500 -tps 300 -o scan_results -j

Argument	Description
-f, --file	Target txt file with IP/CIDR/domain (new-line-separated)
-t, --target	Target IP/CIDR/domain (comma-separated)
-p, --ports	Ports to scan (default: 80,443,53)
-P, --protocol	Protocol to check (tcp, udp, http, https)
-T, --timeout	Timeout in seconds (default: 2.0)
-c, --concurrency	Maximum concurrent connections per host (default: 1000) no more than ~500-1000 on CPU cores
-o, --outfile	Output file path (without extension)
-j, --js	Output in JSON format
-jl, --jsl	Output in JSON Lines format
-q, --quiet	Disable all stdout output
-u, --uvloop_disable	Disable async uvloop (move to standart asyncio event loop)

usage with docker

docker run --rm stanley0507/portfinder:latest -t 192.168.1.1 -p 1-1000

usage with input file with docker

docker run -v $(pwd)/results:/data --rm stanley0507/portfinder:latest -f /data/input_data.txt -p 1-9000 -o scan_result_ -jl

input_data.txt example

192.168.1.1
example.com

basic python usage

from portfinder.scanner import Scanner
from portfinder.dto import Protocol, Result

async def run_scan():
    ...
    scanner = Scanner(
        target="0.0.0.0",
        ports="80-23000",
        protocol=Protocol.HTTP,
        timeout=4.0,
        concurrency=700,
    )
    results: list[Result] = await scanner.run()
    ...

• Result is a active port item (dataclass) with attributes:
  • host: str
  • port: int
  • ip_version: IpVersion
  • protocols: list[Protocol]
• Protocol enum:
  • HTTP,
  • HTTPS,
  • TCP,
  • UDP

output files format:

• txt file

0.0.0.0:21 [ipv4] (tcp)

• json file

[
  {
    "host": "0.0.0.0",
    "port": 21,
    "ip_version": "ipv4",
    "protocols": [
      [
        "tcp"
      ]
    ]
  }
]

• jsonl file

{"host": "0.0.0.0", "port": 53, "ip_version": "ipv4", "protocols": [["tcp"]]}

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License MIT