Simple port Scan

TCP connection scanning, based on sockets, uses threading to implement multi-threading and to control the number of processes.

Note: The Threads_limit variable depends on the host, and there are too many definitions to make the following error:

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Code:

Import socketimport threading#change these vars.start_port  = 20end_port  = 1000host =  ' 8.8.8.8 ' threads_limit = 600open_port = []mylock =  threading. Lock () Def scan_port (port):     global mylock    mysock =  socket.socket (Socket.af_inet, socket. SOCK_STREAM)     if  (MYSOCK.CONNECT_EX ((host, port))  == 0):         mylock.acquire ()         open_ Port.append (port)         mylock.release () for will_scan_port  In range (start_port, end_port+1):     mythread = threading. Thread (target = scan_port, args = (Will_scan_port,))     mythread.start ( )         #limit  thread number    while  (Len (Threading.enumerate ())  >= 600):         pass    print open_port

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Simple port Scan