There are several VPN Client applications on iOS and Android environments. Is there any way to build a VPN Client for the Windows 8 RT apps?
I’ve found discussion here:
http://social.technet.microsoft.com/Search/en-US/windows?query=vpn&rq=meta:Search.MSForums.ForumID(fc9915fa-bd55-4c15-9a72-9956efee4a7c)+site:microsoft.com&rn=Windows+8+Networking+Forum
There’s a way to access and setup this information on the Windows 8 desktopusing Routing and Remote Access (found here):
http://code.msdn.microsoft.com/windowsdesktop/Routing-and-Remote-Access-ba17e417#content
Is there a way to modify user settings on their device to setup VPN?
As with prime security issues around allowing an app to do such a change – my best guess would be that the winRT is not designed to allow apps to modify Remote Desktop settings on a given machine.
You can ask the user to do the changes manually: To see if remote desktop is enabled at all, just check for whether the Terminal Services service is running, using ServiceController.