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/
Download the binary :
wget https://github.com/amine7536/reverse-scan/releases/download/v0.2.1/reverse-scan
chmod +x reverse-scanUsage :
./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 commandRun :
./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.
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