python3实现telnet查看IP地址段端口开放情况

1、python3实现IP地址段打印

 1 #!/usr/bin/python3
 2 #-*- coding:utf-8 -*-
 3 
 4 #编写环境  windows 7 x64 + Python3.7.0
 5 #python3实现IP地址段打印
 6 
 7 #ip转换方法
 8 def ip2num(ip):
 9     ip=[int(x) for x in ip.split('.')]
10     return ip[0] <<24 | ip[1]<<16 | ip[2]<<8 |ip[3]
11 def num2ip(num):
12     return '%s.%s.%s.%s' %( (num & 0xff000000) >>24,
13                             (num & 0x00ff0000) >>16,
14                             (num & 0x0000ff00) >>8,
15                             num & 0x000000ff )
16 
17 #把输入的ip范围组合成一个list形式
18 def get_ip(ip):
19     start,end = [ip2num(x) for x in ip.split('-') ]
20     return [ num2ip(num) for num in range(start,end+1) if num & 0xff ]
21     
22     
23 if __name__ == '__main__':
24     iplist = get_ip('10.10.10.1-10.10.10.10')
25     print(iplist)

2、python3实现telnet查看IP地址段端口开放情况

 1 #!/usr/bin/python3
 2 #-*- coding:utf-8 -*-
 3 
 4 #编写环境  windows 7 x64 + Python3.7.0
 5 #python3实现telnet查看IP地址段端口开放情况
 6 
 7 import telnetlib
 8 import gevent
 9 
10 #ip转换方法
11 def ip2num(ip):
12     ip=[int(x) for x in ip.split('.')]
13     return ip[0] <<24 | ip[1]<<16 | ip[2]<<8 |ip[3]
14 def num2ip(num):
15     return '%s.%s.%s.%s' %( (num & 0xff000000) >>24,
16                             (num & 0x00ff0000) >>16,
17                             (num & 0x0000ff00) >>8,
18                             num & 0x000000ff )
19 
20 #把输入的ip范围组合成一个list形式
21 def get_ip(ip):
22     start,end = [ip2num(x) for x in ip.split('-') ]
23     return [ num2ip(num) for num in range(start,end+1) if num & 0xff ]
24     
25 
26 def scan(ip):
27     #调用系统的telnetlib，telnet指定ip的指定端口，如果成功，则
28     try:
29         port =22
30         server = telnetlib.Telnet(ip, port, timeout=10)
31 
32         #给ip后面加一个换行符，用来在txt里面换行显示
33         new_ip = ip + '\n'
34 
35         #以追加的形式将端口开放的ip列出来
36         file = open('thefile.txt', 'a')
37         file.write(new_ip)
38         file.close()
39         print('{0} port {1} is open'.format(ip, port))
40     except Exception as e:
41         print('{0} port {1} is off'.format(ip, port))
42         print(e)
43 
44  
45 if __name__ == '__main__':
46     iplist = get_ip('10.10.10.1-10.10.10.10')
47     print(iplist)
48     
49     #单线程模式
50     # for ip in iplist:
51     #     print scan(ip)
52 
53 
54     #协程模式，多并发
55     #下面这句的意思就是循环列表里面的ip，全部加到协程(gevent)里面，一起并发启动执行
56     threads = [gevent.spawn(scan, ip) for ip in iplist]
57     gevent.joinall(threads)

3、参考

https://blog.51cto.com/mapengfei/1926039?cid=695986