Question

我一直在关注使用python进行端口扫描的一些教程（这使用线程），无论我做什么，都说所有端口都关闭了。我知道这不可能是因为端口80（网络）对这个网站是开放的，我发现一个在线工具说22和80是开放的。我该怎么办？

import socket
import threading
from queue import Queue
import time

print_lock = threading.Lock()

target = 'www.pythonprogramming.net'

def portscan(port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        con = s.connect(server, port)
        with print_lock:
            print("port",port,"is open")
        con.close()
    except:
        pass
        with print_lock:
            print("port",port,"is closed")

def threader():
    while True:
        worker = q.get()
        portscan(worker)
        q.task_done()

q = Queue()

for  i in range(30):
    t = threading.Thread(target = threader)
    t.deamon = True
    t.start()

for worker in range(1,101):
    q.put(worker)

q.join()

Answer 1

你应该抓住异常并阅读它：

except Exception as e:
    with print_lock:
        print("port",port,"is closed due to " + str(e))

有了它，你可以找到错误。您的错误是＆＃34;服务器＆＃39;未定义＆＃34;。

并且connect方法接受元组，所以你应该这样做

con = s.connect((target, port))

它有效！

Python端口扫描全部关闭

1 个答案: