Earlier this month, Microsoft introduced Windows PowerShell Web Access for Windows Server 8 Beta. This new feature acts as a Windows PowerShell gateway, providing a web-based Windows PowerShell console that is targeted at a remote computer. With Windows PowerShell remote access enabled in the environment, users can now run commands using any web-enabled computer.

Introducing Windows PowerShell Web Access in Windows Server 8 Beta | Windows PowerShell Blog
Deploy Windows PowerShell Web Access | Microsoft TechNet