. -- Router 1 => 10 - 20 Users | Router 2 => 10 - 20 UsersInternet Pipe(s) => Powerful Linux Server => | Router 3 => 10 - 20 Users | Router 4 => 10 - 20 Users | Router 5 => 10 - 20 Users .... .... .... .... .... -- Router n => 10 - 20 Users