networkscanner.py

import ipaddress
import os
import socket
import threading
import sys

network = ipaddress.ip_network('192.168.1.0/24')


def scanport(host, port_number):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(5)
    if sock.connect_ex((host, port_number)) == 0:
        print("\t Port " + str(port_number) + " open.\033[K")


# Find hosts that are up and scan them.

scanning_threads = []

for host in network.hosts():
    if os.system('ping -n 1 -w 10 ' + str(host) + ' >nul') == 0:
        print("Host is up at: " + str(host))
        print("Scanning host...")
        for port in range(1, 65535):
            scan_thread = threading.Thread(target=scanport, args=(str(host), port))
            scan_thread.start()
            scanning_threads.append(scan_thread)
            if((port % 100) == 0):
                # Wait for all current threads to finish.
                for thread in scanning_threads:
                    thread.join()
                # All threads are finished, we can clear the buffer.
                scanning_threads.clear()