Change the Default IP Address in Small Business Server

1. Change the IP address and subnet mask to the new preferred IP and subnet.
2. If this computer contains two or more network cards, the card connecting to the router should be configured with a default gateway (the router's)address. All others should be left blank.
3. If it is not connected to a router, the Default Gateway option should be left blank.
4. Both the primary and secondary WINS address fields should be populated with the new address of the internal card. The WINS addresses for the external card can be left blank. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

   185786 Recommended Practices for WINS

5. If you have the Remote Access service (RAS) or Routing and Remote Access service (RRAS) set up to receive TCP/IP dial-in clients, your server should have an Lmhosts file with the following entry

   x.x.x.x JSPNRMPTGSBSSDIR #PRE

   where x.x.x.x is an IP address that is associated with the RAS server's internal network adapter. This address should be changed to the new IP address. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

   150820 RAS Service Broadcasts Name Query Every Two Minutes

DHCP Changes to Be Made

1. Select the default 10.0.0.0 scope and from the Scope menu, and then click Deactivate.
2. Create a new scope for your new subnet by selecting Local Machine in the Servers list, and then click Create from the Scope menu.
3. Specify a valid start and end IP addresses for the new scope along with the subnet mask.
4. The exclusion range should be configured to reflect all addresses that are statically assigned or needs to be kept aside for future static assignment.
5. Click OK.
6. Click Yes, when prompted to activate the newly created scope. Commonly used options like 03 Router, 15 Domain Name, 44 WINS NBNS server, and 46 WINS/NBT Node Type can be defined at this time, if necessary. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

   139904 How to Configure Your DHCP Server Scope

Proxy Changes to Be Made

1. On the toolbar click Start, click Programs, click Administrative Tools, click Microsoft Proxy Server, and then start Internet Service Manager.NOTE: If using Small Business Server 4.5, on the toolbar click Start, click Programs, click Microsoft Proxy Server, click Microsoft Management Console, and then expand the Internet Information Server folder.
2. Double-click the Small Business Server server name listed next to the WinSock or WebProxy service.
3. In the Properties dialog box, click Edit Local Address (LAT).
4. Reconstruct your Local Address Table to include all internal IP addresses. This can be done by clicking Construct Table. All external IP addresses should be removed from the Local Address Table.
5. Click OK, to close the Local Address Table Configuration dialog box.
6. Click OK, to close the Properties dialog box.
7. Change the IP address configured in the Mspclnt.ini file on the server located at c:\Smallbusiness\Clients\Ms\Proxy. NOTE: If Proxy has been updated to 2.0 (as on SBS 4.5), the Mspclnt.ini file will be located in c:\Msp\clients.
8. Modify the Client.inf in the c:\Smallbusiness\template directory to change the references to 10.0.0.2 to the server's new IP address.
9. Restart the server for all changes to take effect.

Existing Clients Using DHCP

1. On Windows 95 and Windows 98 clients, run Winipcfg.exe.
2. Click Release, and then click Renew to get a new IP address and all configured options from the server. NOTE: For Windows NT clients, use the IPCONFIG /RELEASE command, followed by IPCONFIG /RENEW command at a command prompt.
3. Update the Proxy server's IP address in WSP client in Control Panel.
4. Click Update for the client to receive the latest changes to the Local Address Table. Verify for each user on each Small Business Server client that Internet Explorer's proxy settings are pointing to the Small Business Server server's new IP address. To verify, right-click Internet Explorer on the desktop, click Properties, then click the Connections tab.