Using Multiple Internet Domain Names and Addresses Over RAS

• Microsoft Windows NT Workstation versions 3.5 and 3.51
• Microsoft Windows NT Server versions 3.5 and 3.51
• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Workstation version 4.0

SUMMARY

This article explains how to use multiple IP addresses and multiple Internet domain names on a stand-alone Windows NT computer to dial to the Internet using Remote Access Service (RAS). If this computer provides routing to an Internet Service Provider (ISP) for the local area network, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q121877
   TITLE     : Using RAS for Routing of IP Packets

MORE INFORMATION

Your ISP may assign multiple IP addresses for different domain names on the Domain Name System (DNS) server. This allows a single Web server to service multiple companies (appears as multiple Web servers).

WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

To configure RAS to use these IP addreses, do the following:

1. Use the first IP address for the RAS connection.

   a. Start the Remote Access client.

   b. Select the phonebook entry you want to modify and click Edit.

   c. Click Advanced. If the Advanced button is not available, proceed to

         the next step.
   

   d. Click Network.

   e. In the Network Protocol Settings dialog box, click TCP/IP Settings.

   f. Select Require specific IP address and enter the IP address.

   g. Quit the Remote Access client.

2. Use the other IP addresses for your network adapter.

   NOTE: If you do not have a network adapter, install the MS Loopback Adapter. To do this, click Add Adapter in Control Panel Network.

   a. In the TCP/IP Configuration dialog box, add the next available IP

         address and the subnet mask.
   

   b. Click Advanced to add the remaining IP addresses and corresponding

         subnet masks.
   

         NOTE: The RAS connection and the MS Loopback Adapter can use the
         same subnet mask.
   

3. Start Registry Editor (REGEDT32.EXE) and locate the following Registry subkey in the HKEY_LOCAL_MACHINE subtree:

   \SYSTEM\CurrentControlSet\Service\RasArp\Parameters

4. From the Edit menu, select Add Value.

5. Enter the following:

         Value Name: DisableOtherSrcPackets
         Data Type:  REG_DWORD
         Data:       0
   
   

6. Choose OK and quit the Registry Editor.

7. Shut down and restart Windows NT.