A portscanner in python to scan for open ports:
1.Download the file portscanner_ir.py
2.Run it in a linux or ubuntu terminal with the code '$python portscanner_ir.py -H ('ip address range') -p ('ports separated with comma')
3.Example:- $python portscanner_ir.py -H 172.30.91.* -p 21,22,23 //Scans for ports 21, 22 and 23 for ip ranges 172.30.91.1-255.