I have connected via RAS to a server however I can only see resources on the machine I connect to.

Start the Network Control Panel Applet (Right click on Network and select properties)

Select the Service tab and select the Remote Access Service and click Properties

Select the COM port and click the Network button

Click the Configure button next to the protocol you wish to change access (e.g. TCP/IP)

At the top check the "Entire network" button

Click OK