Unable to Configure "Allow Calling Computer to Specify its own IP Address" in Windows 2000

ID: Q250881

The information in this article applies to:
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Server
IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

When you configure a Windows 2000-based computer that is a member of a domain, there is no option in the Routing and Remote Access (RRAS) snapin to configure "Allow calling computer to specify its own IP address."


CAUSE

This issue is caused by changes to RRAS in Windows 2000.


RESOLUTION

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).
To resolve this issue and configure the "Allow calling computer to specify its own IP address" feature, use the appropriate method:

Method 1

NOTE: The registry key listed below will only be used if the remote access policy is set to "Server settings define policy." If the policy is set to anything else, then the registry key is ignored. Once the registry key is set manually, configuring or disabling RRAS will not reset the registry key.

Use Registry Editor (Regedit.exe) to locate the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteAccess\Parameters\Ip
Add a new DWORD Value with the following registry value: 

Value Name: AllowClientIpAddresses
   Data Type:  REG_DWORD
   Value:      1

Method 2

Windows 2000 RRAS and the Internet Authentication Service (IAS) use remote access policies to determine if a connection should be accepted. You may configure the "Allow calling computer to specify its own IP address" feature by modifying remote access policies. By default, Windows 2000 configures a default policy called "Allow access if dial-in permission." You can either modify the default policy or create a new policy. To modify the default policy:

NOTE: By following the steps below, any client with remote access rights will be allowed to request a Transport Control Protocol/Internet Protocol (TCP/IP) address. If you do not want every client to be able to do this, you must create a new policy with new conditions. Then, only users who meet the conditions of the policy will be allowed to request a predetermined TCP/IP address.

  1. Depending on how your user authentication is configured, open either the IAS Microsoft Management Console (MMC), or the RRAS MMC snapin.


  2. Select Remote Access Policies.


  3. Right-click Allow access if dial-in permission is enabled, and then click Properties.


  4. On the Policy Condition dialog box, click Edit Profile.


  5. From the Edit Dial-in properties dialog box, click IP.


  6. Click Client may request an IP address, click OK, and then click OK.



STATUS

This behavior is by design.


MORE INFORMATION

When a Windows 2000-based computer is not part of a domain, an Incoming Connections icon is present in My Network Places. To enable this functionality:

  1. Right-click My Network Places, and then click Properties.


  2. Right-click Incoming Connections, click Properties, and then click Networking.


  3. Click Internet Protocol(TCP/IP), and then click Properties.


  4. Click Allow calling computer to specify its own IP address, and then close My Network Places.


For additional information about RRAS, click the article numbers below to view the articles in the Microsoft Knowledge Base:
Q176924 Using PPTP, RRAS, and Proxy Server 2.0
Q227747 RRAS Server Stops Authenticating DUN Clients
Q193550 Windows NT 4.0 RAS Authentication with Windows 2000
Q191854 RAS Authentication Does Not Work Connecting to RRAS Server

Additional query words:

Keywords : kbenv kbnetwork kbtool kbui ntras
Version : WINDOWS:2000
Platform : WINDOWS
Issue type : kbprb


Last Reviewed: January 27, 2000
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