How can I secure the network by refusing workstations that are not authorized by the domain from using our resources? E.G. printers, network, internet, etc. Our network is also connected to another domain (other branches) but I want to be able to have more control on how to restrict/allow which workstations and domains are the trusted PCs. If we have a guest wanting to logon or use our network, they would have to get authorization from the I.T staff, etc.
Please make your answer as clearly and easy to follow as possible. Thanks in advance.