I have a customer with a central site and two branch office. Routing is configured on the WAN to connect all three locations. All servers and internet access are on the central site.
Customer wants to install NAC appliance. Do I need a NAC apliance at each location? Or do I just install it at the central location and use that NAC appliance for access control to the two remote sites as well.
Also how does NAC appliance apply access control to users coming into the network via Citrix or Cisco VPN Clients?