using paramiko problem? please help me

[sa6113]

I want to connect to a Windows machine in my network , using ssh, I use
paramiko but I have problem in authentication, would you please help me?

1- I have installed freeSSHD in server machine? Is it necessery ? or may I
have to install another program?

2- I have entered server's Ip insted of hostname.Is it correct?

3- I have creat a user in server machine with a password to connect. Am I
right?

4- I use this code in clinet computer? May I need another code for server
computer?
hostname = "192.168.1.4" 
username = "test" 
port = 22 
password = '123456' 

# now connect 
try: 
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
    sock.connect_ex((hostname, port)) 
except Exception, e: 
    print 'Connect failed: ' + str(e) 
    traceback.print_exc() 
    sys.exit(1) 

t = paramiko.Transport(sock) 
event = threading.Event() 
t.start_client(event) 
print "started client" 
event.wait(15) 

if not t.is_active(): 
    print 'SSH negotiation failed.' 
    sys.exit(1) 
else: 
    print "SSH negotiation sucessful" 

print "doing authentication" 
t.auth_password(username, password, event) 


event.clear() 
event.wait(20) 

the result is : 
started client 
ssh negotiation sucessful 
authentication failed

what should I do?
please help me , I am new in paramiko.
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