The setup of the RD Gateway is fairly easy but there are a few things you might want to take into consideration. The first thing you should do is create a few groups. These will help you control access to the servers. The groups we will be making can be named anything you want. I just find it helps naming the groups in this fashion.
Create another Group called RD RAP. You will be adding computers to this group.
Add the RDS servers to this group.
In order to install RD Gateway you need to click on “Add Role Services”.
Select “Remote Desktop Gateway”
You will be prompted to install any extra service RD Gateway needs. Click “Add Required Role Services”
Click next. You will now be prompted for the SSL Cert. For this example I will use the cert that was installed with the server. Click Next.
I like to set things up right at the beginning.
You will be asked what groups that you want to be able to connect through the RD Gateway. We originally created the RD Gateway Users group in AD in the first few steps. Click next when done.
Next screen you need to create an RD CAP to allow users to connect the RD Gateway Server. By default the name is TS_CAP_01. I figure it’s best to name it something easier to remember.
Browse for the Group you created earlier call RD RAP.
Select the defaults
Click NEXT, NEXT,NEXT and install to finish of the install. If you have any issues with the cert open RD Gateway and tell console to create a new one.