@S_Riluvan If you’re talking about making public ROS resources available on an internal non accessible network please checkout the documentation on mirroring: http://wiki.ros.org/Mirrors
If you’re thinking about running your own infrastructure with private source code you’ll want to look at the ros_buildfarm project: https://github.com/ros-infrastructure/ros_buildfarm/blob/master/doc/index.rst
PS: I’ve moved your thread to the Mirror’s category as it’s more appropriate. If you have more questions please ask them on https://answers.ros.org following our support guidelines.