Question

我无法创建同时扫描IP地址和端口的端口扫描程序。端口扫描部分代码工作正常但我无法正确添加IP地址并使循环工作同步。我要求用户输入前3个八位字节，然后代码将使用第四个八位字节扫描并向前移动数字。输出应该看起来像：

IP 127.0.0.1端口22已关闭 IP 127.0.0.1端口23已关闭 IP 127.0.0.1端口24已关闭 IP 127.0.0.2端口22已关闭 IP 127.0.0.2端口23已关闭 IP 127.0.0.2端口24已关闭 ....等

以下是目前的代码：

    import socket

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    server = 'google.com'

    portstart = int(input("Enter starting port number to scan: "))
    portend = int(input("Enter end port number to scan: "))
    octets = input("Enter the first 3 octets of an IP to scan:")
    fourthoctet = 1

    for portnum in range (portstart, portend):
        try:
        s.connect((server,portnum))
           print("port",portnum,"is open")
        except:
           print("port",portnum,"is closed")
        for fourthoctet in range (1,256):
           print("IP", octets,".",fourthoctet)

Answer 1

根据您想要的输出判断，您的循环不应该像这样吗？

for fourthoctet in range (1,256):
  for portnum in range (portstart, portend):
    print("IP", octets,".",fourthoctet, end=" ")
    try:
      s.connect((server,portnum))
      print("port",portnum,"is open")
    except:
      print("port",portnum,"is closed")

创建IP和端口扫描程序Python

1 个答案: