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we want our cisco devices to authenticate to a radius server. This windows box is also a domain controller and is already being used to authenticate other things. We created a security group called Network_ADmins. &nbsp;What other steps on the Windows side do I need to take? 
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we want our cisco devices to authenticate to a radius server. This windows box is also a domain controller and is already being used to authenticate other things. We created a security group called Network_ADmins.  What other steps on the Windows side do I need to take? 

Using windows as a Radius server (Cisco)

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.