You have a VPN server named Server1 and a file server named Server2. Both servers run Windows Server 2003 Service Pack 2 （SP2）. VPN clients report that they cannot access shares on Server2 after connecting to Server1.  You confirm that VPN clients receive the appropriate IP configurations and that they have permissions to the shared folders on Server2. You need to ensure that VPN clients can access the shares on Server2 when they connect to the network by using a VPN connection.  What should you do？（）