Create a program to create port scanner in python assignment solution

Instructions

Objective

Write a python homework program to create port scanner.

Requirements and Specifications

Source Code

import socket import time import sys from datetime import date if __name__ == '__main__': # ask for domain ip = input("Enter ip address or domain name to scan: ") # Validate that input is numeric for starting port end ending port try: port_a = int(input("Enter starting port number (1 - 65535): ")) port_b = int(input("Enter ending port number (1 - 65535 greater than start port num): ")) except: print("The input for starting port and ending port must be numeric.") sys.exit(1) # Check that starting port and ending port are between 1-65535 if port_a not in range(1, 65535+1) or port_b not in range(1,65535+1): print("Starting port and ending prot must be between 1-65535.") sys.exit(1) if port_b <= port_a: print("Ending port number must be greater than starting port number.") sys.exit() # print info print('*'*30) print(f"List of open ports. Host:{ip} Start Port#:{port_a} End Port#:{port_b}") print(f"Start: {date.today()}") print('*'*30) # Save starting time start_time = time.time() for port in range(port_a, port_b+1): # iterate through ports print(f"Scanning port {port}", end="\r") try: a_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) a_socket.settimeout(1) result = a_socket.connect_ex((ip, port)) if result == 0: # port open print(f"{ip}:Port:{port}") except socket.error as e: #print("time out.") print(e) finally: a_socket.close() # Save ending time end_time = time.time() # Print time taken print("Time taken {:.2f} seconds".format(end_time-start_time))