•When you try to connect to the server by using a VPN connection, you receive the following error message:
Error 800: Unable to establish connection.
• You cannot create a Remote Desktop Protocol (RDP) connection to the server.
• You cannot connect to shares on the server from a computer on the local area network.
• You cannot join a client computer to the domain.
• You cannot connect to Microsoft Exchange Server from a computer that is running Microsoft Outlook.
• You can only connect to Web sites that are hosted on the server or on the Internet by using a secure sockets layer (SSL) connection. In this scenario, you cannot connect to a Web site that does not use SSL encryption.
• You experience slow network performance.
• You cannot create an outgoing FTP connection from the server.
• The DHCP Server service crashes.
• Clients experience slow domain logons.
• Network Address Translation (NAT) clients that are located behind Windows SBS 2003 experience intermittent connection failures.
• You experience intermittent RPC communications failures.
• Clients that are configured as SecureNat clients may be unable to connect to the Internet.
• Some Outlook clients may be unable to connect to Exchange.
• You cannot run the Configure E-mail and Internet Connection Wizard successfully.
• Microsoft Internet Security and Acceleration (ISA) Server blocks RPC communications.
• Clients cannot visit the http://companyweb Web site.
• You cannot browse Internet Information Services (IIS) Virtual Directories.