Group Policy is one thing that you cannot really get around with when deploying Unified Remote Access, even with the simplest of configuration scenarios. Group Policy is the key mechanism for storing and passing configuration options for URA, and as such requires a better understanding than average, and you stand to gain a lot from it by working properly. In the following screenshot, you can see a piece of the Group Policy that is configured on a domain as part of URA setup:
The good news is that you don't have to do a lot on your own. In fact, if your domain is in order, you may not need to do anything. After all, Group Policy is a built-in feature of Windows Domains and even though it sometimes needs care, it's pretty rare.
The core functionality of URA is based on an IPsec tunnel between the URA clients and server, on which the traffic is encrypted using IPsec. The system component that establishes the tunnels and performs the required authentication is the Windows Firewall...