socket/端口扫描

原理:利用socket回话,只连接耳不收发任何信息

from socket import *

def scan(host,port):
    try:
        soc = socket((host,port))
        soc.connect()
        print(f"the port {host} is open")

if __name__ == '__main__':
    host = input("enter a ipv4 address: ")
    for port in range(2**16):
        scan(host,port)
    print("scan done")