brown_driver not running from workstation computer ? [closed]

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I tested my host and master connection by running turtlesim node and I can run it both from host (workstation) and master (turtlebot notebook) indivisually and by running turtlesim node on master and controlling it using keyboard of host and vice-versa.

when I am running it for turtlebot folowing are the problem.

1. brown driver is not running from host (workstation) as the workstation is looking for a connection with turtlebot on the workstation communication port.

2. even if I run brown driver on master (turtlebot notebook) and trying to control it from host (workstation) by running command .....

   roslaunch turtlebot_teleop keyboard_teleop.launch

it is not working. Please tell the solution.