When to Use Secure Access Sites
- You need to limit WAN traffic between locations and are using AD sites to limit authentication to local servers http://technet.microsoft.com/en-us/library/cc782048(v=ws.10).aspx.
- Your locations communicate between a NAT device, which causes the internal IP address of an end machine to be lost when communicating between locations.
- Your locations use overlapping internal IP ranges.
- You have locations which have high-latency connections between them—for example, branches in different continents. High latency connections, especially between the connector and the VAs, can result in delays to updates for user mappings.