簡單高效的埠掃瞄python指令碼

最近為了獲取虛擬機器埠開放情況，寫了乙個簡單指令碼來檢視。共享給大家。下面的**在python2種測試通過

說明：concurrent是python 3.2 引入的乙個庫，在python2中使用需要手動安裝一下： pip install futures

from concurrent import futures

import socket
import threading
import time
socket.setdefaulttimeout(3)
defscan_port
(ip, port):
try:
s = socket.socket(socket.af_inet, socket.sock_stream)
result=s.connect_ex((ip,port))
if(result==0):
print ip,":",port,"open"
s.close()
except:
print
"scan exception!"
if __name__== "__main__":
ip = "127.0.0.1"
t = time.time()
with futures.threadpoolexecutor(max_workers=100) as executor:
future_to_port = 
for future in futures.as_completed(future_to_port):
future.result()
total_time = time.time() - t
print
"total time:%f" % total_time
~

root@centos:~# python scan.py 

127.0
.0.1 : 22
open
127.0
.0.1 : 80
open
127.0
.0.1 : 443
open
127.0
.0.1 : 3306
open
127.0
.0.1 : 4200
open
127.0
.0.1 : 8001
open
total time:20.943239

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