How to Configure SBS for Internet Access by Using Modem or Dial-up Connection

This article describes how to configure Small Business Server (SBS) 2000 in a scenario where the server uses a modem or terminal device such as an Integrated Services Digital Network (ISDN) device to connect to the Internet. This article may help you resolve some of the following issues:

• You experience slow start times during "Configuring Network Connections."
• You are unable to access the Internet.
• Users are unable to log on to the domain.
• Exchange Server cannot send or receive e-mail messages.
• Event ID 5775 DNS deregistration errors are logged.

If a server uses a modem or terminal device to connect to the Internet, the DNS server is the pivotal point for Active Directory and Local Area Network (LAN) connectivity. Active Directory client computers (including the server and its services) use DNS to locate domain controllers for administration and logon procedures. For Active Directory clients and servers to function correctly, you must have a DNS server installed and configured with the appropriate DNS zone information.

The Internet Connection Wizard in SBS is designed to help you configure Windows 2000 networking through LAN connections or remote dial-up connections, Exchange 2000 Server, and Internet Security and Acceleration (ISA) Server 2000.

To configure internal and external connectivity on the server:

1. Verify DNS settings for the Local Area Connection for the internal network adapter.
2. Set the binding order.
3. Run the Internet Connection Wizard.

The following sections describe how to complete each of these steps.

Step 1: Verify DNS Settings for the Local Area Connection

1. Click Start, point to Settings, and then click Network and Dial-up Connections.
2. Right-click Local Area Connection, and then click Properties.
3. Right-click Internet Protocol (TCP/IP), and then click Properties.
4. Confirm that the installation uses the following Internet protocol (IP) address settings (these settings are the default settings for a new installation of SBS 2000):
   IP Address: 192.168.16.2
   Subnet Mask: 255.255.255.0
   Default Gateway:
5. Confirm the following settings in Internet Protocol (TCP/IP) properties:
   Preferred DNS server: 192.168.16.2
   Alternate DNS server: blank
   NOTE: The preferred DNS server uses the IP address of the network adapter.
6. Click Advanced, and then click the WINS tab.
7. Verify that your server's internal IP address is listed in the WINS addresses list.
   
   If it is not listed, click Add, and then add your server's internal IP address.
8. Click OK, and then click OK.

Step 2: Set Binding Order

1. In Control Panel, double-click Network and Dial-up Connections.
2. On the Advanced menu, click Advanced Settings.
3. Click Local Area Connection in the Connections box, and then click the arrow buttons to arrange the connections so that Local Area Connection (for your internal network adapter) precedes (Remote Access connections).
4. Click OK.
5. Quit Network and Dial-up Connections.
6. If you receive a message that asks if you want to restart the server, click Yes.

Step 3: Run the Internet Connection Wizard

1. Click Start, and then click Small Business Server Administrator Console.
2. Click TO DO List, and then click Internet Connection Wizard.
3. When the Internet Connection Wizard starts, click Next.
4. On the Configure Hardware page, click Modem or Terminal Adapter, and then click Next.
5. Click the dial-up entry for your Internet service provider (ISP) connection or click New to create a new one. To create a new connection:
   1. In the ISP account name box, type the user account provided by the ISP.
   2. Type the password to be used to log on to the ISP in the Password and Confirm Password boxes.
   3. If the ISP provides you with static IP addresses for your dial-up connection, click to select the I have a static IP address from my ISP with this connection, and then type the IP address information provided by the ISP.
   4. Click Next to continue the wizard.
      
      NOTE: To find out more about information that is requested by or required in the wizard, click More Information in the wizard.
6. Configure network adapters.
   
   NOTE: If more than one network adapter is present, configure the adapter that has the 192.168.16.2 IP address.
7. On the Configure Internet Mail Settings page, click Use SMTP for Internet mail in the Exchange Server box, type the appropriate Post Office Protocol 3 (POP3) setting for your environment or configuration, and then click Next.
   
   NOTE: You can use the Internet Connection Wizard to configure the server to retrieve messages using POP3; however, this article does not address this procedure. If you want to configure POP3 in the Internet Connection Wizard, click More Information in the Internet Connection Wizard to refer to the additional help provided by the wizard.
8. On the Configure Internet Domain Name page, type the domain name where the user needs the messages to be delivered. For example, if the user receives messages as "userx@microsoft.com", type microsoft.com as the domain name.
9. Click Next.
10. On the Configure SMTP Server Address page, click Use domain name system (DNS) for mail delivery.
    
    NOTE: Some ISPs may require you to forward all outbound messages to one of their e-mail servers for delivery. In this case, click Forward all mail to hosts, type the IP address of the ISP relay server, and then click Next.
11. On the Receive Exchange Mail page, click the appropriate option.
    
    Your selection depends on how you are going to retrieve messages from the ISP. For example, if you retrieve messages using the Microsoft Exchange Connector for POP3 Mailboxes, click Do not send a signal.
    
    NOTE: You may need to enable message dequeuing for mail retrieval depending on the mail retrieval method that you use. It is recommended that you discuss this issue with your ISP to ensure compatibility.
12. Click Next.
13. If the Mail Retrieval Frequency page is displayed, enter the time interval that you want your server to call the ISP for mail retrieval if a connection has not already been established. Fifteen minutes is the minimum value available.
14. Click Next.
15. Click Enable ISA server packet filtering option and any required packet filters.
    
    NOTE: The My Web Server and My Web-based Mail Server options are dimmed for a dial-up configuration.
16. Click Next.
17. If you receive a warning message about packet filters, click OK.
18. Click Finish.

Additional Configuration

To help with client connectivity, you may have to modify the DHCP scope for your local network. The following configuration is recommended for the DHCP scope; this configuration works in a majority of configurations. This example assumes that you are using the default setting that is provided with the SBS installation.

1. Click Start, point to Programs, point to Administrative Tools, and then click DHCP.
2. Click to expand the tree until the following data is displayed:
   server.domain.local[192.168.16.2]
   Scope[192.168.16.0]
   Scope Options
3. Click Scope Options.
   
   The following entries are displayed in the right pane.
   Collapse this tableExpand this table

   Option Name	Vendor	Value
   003 Router	Standard	192.168.16.2
   006 DNS Servers	Standard	192.168.16.2
   044 WINS/NBNS Servers	Standard	192.168.16.2
   046 WINS/NBT Node Type	Standard	0x1