Python tests whether a network segment IP is alive, if a single port is enabled, and whether it can ssh

This script is to monitor whether the host is alive in a network segment, whether Port 22 is on, and whether the SSH login can be successfully logged through a unified user name and password, and the host IP that could be logged in is logged to the file.

Shortcomings is that I do not know whether to test SSH login, there is a ping address is really slow, but fortunately there is time to write a multi-threaded should be much faster.

The code is as follows:

#!/usr/bin/python# -*- coding:utf-8 -*-import osimport subprocessimport reimport  socketimport paramikouser =  ' root ' passwd =  ' 123456 ' Def ip (File,field):         ip_field = field         ip_file = open (file, ' W ')         for i  In range (1,256):                 ip =  '%s%s\n '  %  (ip_field,i)                  ip_file.write (IP)          ip_file.close () def test_ip (file):        file =  Open (file, ' R ')         ip_list = []         porT = 22        f = open (' Login_ip.txt ', ' W ')          for line in file.readlines ():                 line=line.strip (' \ n ')                  ip_list.append (line)          for ip in ip_list:                 p = subprocess. Popen (["ping -c 1 " + ip],                              Stdin = subprocess. pipe,                     &nbsP;       stdout = subprocess. pipe,                             stderr = subprocess. pipe,                             shell = true)                  out = p.stdout.read ()                 regex =  re.compile ("time=\d*",  re. Ignorecase | re. MULTILINE)                 if  len (Regex.findall (out))  > 0:                         print ip +  ':  Host  up! '                          s = socket.socket (Socket.af_inet,socket. SOCK_STREAM)                          try:                                  s.connect ((Ip,int (port)))                                   s.shutdown (2)                                  print  '%d is  open '  % port                                  try:                                          ssh = paramiko. Sshclient ()                                           ssh.set_missing_host_key_policy (Paramiko. Autoaddpolicy ())                & nbsp;                         ssh.connect (IP,22,USER, PASSWD)                                            #stdin,  Stdout, stderr = ssh.exec_command ("Your command")                                            #print  stdout.readlines ()                                           Ssh.close ()                                           print  ' login successful '                          #                f = open (' Login_ip.txt ', ' W ')                                           ip =  '%s\n '  % ip                             &nbsP;            f.write (IP)                  #                return True                                  except:                                          print  ' the login  Problem, please check your username and password '                           except:                                 print  '%d is down '  % port                 #               return  False                else:                          print ip +  ':  host down! '         file.close ()          F.close () IP (' Test ', ' 192.168.209. ') TEST_IP (' Test ')

This article is from the "Eight Miles" blog, so be sure to keep this source http://5921271.blog.51cto.com/5911271/1580968

Python tests whether a network segment IP is alive, if a single port is enabled, and whether it can ssh