https://github.com/amine7536/reverse-scan

Perform reverse DNS lookups on huge network ranges
https://github.com/amine7536/reverse-scan

dispatch dns golang huge-network-ranges reverse-dns-lookups workers

Last synced: 11 days ago
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Perform reverse DNS lookups on huge network ranges

• Host: GitHub
• URL: https://github.com/amine7536/reverse-scan
• Owner: amine7536
• Created: 2017-06-30T13:01:25.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-05-21T13:17:22.000Z (over 5 years ago)
• Last Synced: 2024-06-20T06:22:23.793Z (5 months ago)
• Topics: dispatch, dns, golang, huge-network-ranges, reverse-dns-lookups, workers
• Language: Go
• Homepage:
• Size: 3.21 MB
• Stars: 23
• Watchers: 5
• Forks: 5
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Reverse-Scan

Perform reverse DNS lookups on huge network ranges

This utility uses the "Dispatcher/Workers" pattern discribed here :

- https://gobyexample.com/worker-pools

- https://nesv.github.io/golang/2014/02/25/worker-queues-in-go.html

- http://marcio.io/2015/07/handling-1-million-requests-per-minute-with-golang/

# Getting Started

Download the binary :

```bash

wget https://github.com/amine7536/reverse-scan/releases/download/v0.2.1/reverse-scan

chmod +x reverse-scan

```

Usage :

```bash

./reverse-scan --help

Reverse Scan

Usage:

  reverse-scan [flags]

  reverse-scan [command]

Available Commands:

  help        Help about any command

  version     Print the version number

Flags:

  -e, --end string      ip range end

  -h, --help            help for reverse-scan

  -o, --output string   csv output file

  -s, --start string    ip range start

  -w, --workers int     number of workers (default 8)

Use "reverse-scan [command] --help" for more information about a command

```

Run :

```bash

./reverse-scan --start 37.160.0.0 --end 37.175.255.255 --output /tmp/out.csv -w 1024

2017/06/30 15:01:29 Resolving from 37.160.0.0 to 37.175.255.255

2017/06/30 15:01:29 Caluculated CIDR is 37.160.0.0/12

2017/06/30 15:01:29 Number of IPs to scan: 1048576

2017/06/30 15:01:29 Starting 1024 Workers

   9s [======================================================>-------------]  81%

```

You specify the number of workers with the option `-w`, by default the utility start with 8 workers.

You must also specify an output CSV file.