title: Connecting to cqlsh from remote fails, where as from localhost it connects?
body: <p>Installed DSE on CentOS7 and saw no errors, I'm able to connect to cqlsh from the local machine and and I'm able to also do a telnet on the port.
  However the problem is that when the same is done from a remote machine I get the below error
   cqlsh XX.XXX.XX.XX 3389
  Connection error: ('Unable to connect to any servers', {'10.223.61.49': ConnectionShutdown('Connection to 10.223.61.49 was closed',)})</p>
  
  <p>To check the connectivity I did a telnet on this and see the below error
  telnet XX.XXX.XX.XX 3389
  Invalid or unsupported protocol version (13); supported versions are (3/v3, 4/v4, 5/v5-beta, 65/dse-v1)</p>
  
  <p>I tried updating the Python version, also few tweaks to change the py script also didn't help</p>