Internet Access rights in java API

hai
Iam trying a new project network administrator. It has to maintain the rights to access the net from the server. i.e Iam using a windows server. The Internet is connected to the server machine. There are 5 local machines which are connected to the server machine through LAN. The server machine IP is given as a gateway of the local machine. Then the internet is accessed by the local machine which connected in the LAN.
My project is to create a java program in the server machine to give the rights for local machine to access the internet. Is there is any API related to internet access rights please reply for me or if there is any other ideay to do this project reply for me

Java is not forcibly the best choice to administer a Windows server.

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Internet Access rights in java API

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