Change hostname of session host server in rd web

Hi,

Using windows server 2012, how do i change the hostname that the users connect to when using eg a published remoteapp? It defaults to the sever fqdn, eg, rdsh.corp.example.com, which isn't really available from the outside. I want it to connect directly to rdsh.example.com.

This was possible to set in windows 2008 r2 Remoteapp Manager. under "RD SEssion Host Server" and "Connection Settings".

Where is this setting in 2012?

Thanks