Go to Start \ Programs \Administrative Tools \ Routing and Remote Access
Add Server (Local Computer)
Run the Wizard (Start with the VPN option if you want to practice)
Look for REMOTE ACCESS POLICIES (Start \Help if you are stuck)
N.B. The default RRAS Policy is to Deny users access. This a failsafe mechanism so that no-one can access the RAS server until the administrator has configured the server (or knows what they are doing!).
N.B. To get the most out of your RRAS Policy and Profiles, your domain needs to be in NATIVE mode.
Each Policy has a PROFILE tab this is where you configure how long users can connect to the server, which protocols they use and much more besides.
The Routing side of RRAS
Windows 2000 or Server 2003 servers can act as a software router. Naturally you need at least two network cards. Check out the Routing by going to RRAS \ <Server Name> \IP Routing \General and then right click and add the Interface or Routing protocol that you need.
This RRAS console has menus with sub menus so there are many features to evaluate e.g. OSPF, L2TP, NAT.
RAS and DHCP Relay Agent
The Relay Agent is now found inside the \IP Routing \General tab of RRAS, if you are going to set up RRAS you either need to configure a separate scope of IP addresses or else use a DHCP Relay Agent to point to the real DHCP server.