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How to Configure a SBS for Full Time Internet Access with a Single Network Adapter
Article ID: 309633 - View products that this article applies to.
This article was previously published under Q309633
This article describes how to configure a Small Business Server (SBS) 2000-based server that has a single network adapter to use a router to access the Internet.
You can use the procedure that is described in this article to resolve the following issues:
306802For additional information about how to configure a server that has a single network adapter to use a dial-up connection to access the Internet, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/306802/EN-US/ )Need to Configure SBS for Full Time Internet Access with Two Network Adapters
(http://support.microsoft.com/kb/309652/EN-US/ )How to Configure SBS for Internet Access by Using Modem or Dial-up Connection
In the configuration that is described in the "Summary" section of this article, the DNS server is the pivotal point for Active Directory and local area network (LAN) connectivity. Active Directory clients (including the server and its services) use DNS to locate domain controllers for administration and logon purposes. You must have a DNS server installed and configured for Active Directory for the associated client software to function correctly.
Because of the combination of server programs, the requirements for compatibility, and the many ways these programs can be configured, you must run SBS Internet Connection Wizard on the server. Internet Connection Wizard supports connections to virtually any ISP, regardless of the connection type-broadband, router, Integrated Services Digital Network (ISDN), or analog modem. You can use Internet Connection Wizard to configure Windows 2000 networking for LAN and wide area network (WAN) connections, Microsoft Exchange 2000 Server for internal and Internet e-mail, and Microsoft Internet Security and Acceleration (ISA) Server.
Server ConnectivityThis article assumes that the SBS-based server has at least one network adapter that has a statically assigned Internet Protocol (IP) address. Do not configure the server as a Dynamic Host Configuration Protocol (DHCP) client. For more information about DHCP, see the "Client Connectivity" section later in this article.
If you use a router for Internet access, the IP address on the router and the IP address on the server must be unique values on the same subnet. By default, the SBS network adapter is assigned an IP address of 192.168.16.2 and a subnet address of 255.255.255.0. This address is a private network address and on a class C subnet. By default, most routers are not configured to work in this subnet. Some routers are preconfigured to use an IP address of 192.168.0.1 and a subnet mask of 255.255.255.0 (this address is also a private IP address in a class C subnet). You may have to change either the routers, the servers, or both IP address so that both addresses are on the same subnet.
The following configuration is an example of a working IP scheme for the SBS-based server and router:
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The following procedure describes how to configure the SBS-based server for internal and external connectivity. In this configuration, the server that is running ISA Server is not being used as a firewall; it is used only as a caching server. You can remove ISA Server from the server.
To configure the SBS-based server for internal and external connectivity:
Automatic Client ConfigurationMicrosoft recommends that you use the DHCP service on either the router or the SBS-based server to the configure client. Do not configure the DHCP service on both devices; you must turn off the DHCP service on one of the devices. Microsoft recommends that you use the Windows 2000 DHCP server and that you turn off the router's DHCP server.
The following example describes a DHCP scope that works in a majority of configurations. This example assumes you are using the default setting provided with the SBS installation.
To view the DCHP scope:
For additional information about how to create a new scope, click the article number below to view the article in the Microsoft Knowledge Base:
280209NOTE: If you use the procedure that is described in the preceding article, configure the scope range in steps 6, 7, and 9 so that they reflect the TCP/IP address values that are compatible with your router and server.
(http://support.microsoft.com/kb/280209/EN-US/ )SBS: SBS 2000 DHCP Service Is Not Configured If a Second DHCP Server Is Detected on the Network
Manual Client ConfigurationTo manually configure client connectivity, use the following settings for network printers, clients, and other devices on your local network.
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NOTE: These settings include that variables that are described in the preceding section.
For additional information about the procedure that is described in this article, click the article numbers below to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/237675/EN-US/ )Setting Up the Domain Name System for Active Directory
(http://support.microsoft.com/kb/260362/EN-US/ )How to Configure Active Directory on a Home Network
Article ID: 309633 - Last Review: October 30, 2006 - Revision: 1.3