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Q255221: Client Can’t Connect to Secure Web Site Requiring Reverse Lookup

Article: Q255221
Product(s): Microsoft Windows NT
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): 
Last Modified: 08-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

Network clients may be unable to connect to secure Web sites that verify that
the client Internet Protocol (IP) address belongs to a domain name registered in
North America. If you attempt to download 128-bit encryption, you may receive a
message stating that your IP address cannot be resolved to a domain name
registered in North America.

Clients experience no other problems browsing the Internet. Your Domain Naming
System (DNS) server has a reverse lookup zone that is correctly configured.

CAUSE
=====

This behavior can occur when your DNS server is not registered with Internic to
provide reverse lookup resolution for the network address of a segment of your
network. When the DNS server has not registered a segment's network address with
Internic, reverse lookup will not succeed for clients that have an IP address
belonging to that network segment; the IP address cannot be resolved to a domain
name.

RESOLUTION
==========

To resolve this behavior, use reverse lookup resolution for the network segment
by registering the network address of the segment with Internic on your DNS
server.

MORE INFORMATION
================

For information about how to contact Internic, click the appropriate article
number below to view the article in the Microsoft Knowledge Base:

  Q65416 Hardware and Software Third-Party Vendor Contact List, A-K

  Q60781 Hardware and Software Third-Party Vendor Contact List, L-P

  Q60782 Hardware and Software Third-Party Vendor Contact List, Q-Z

Additional query words:

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Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Issue type        : kbprb

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