Update to Windows for Workgroups TCP/IP for Out-of-Band Issue

• Microsoft TCP/IP-32 version 3.11b for Windows for Workgroups
• Microsoft Windows for Workgroups

SYMPTOMS

Windows for Workgroups version 3.11 users with Microsoft TCP/IP installed and running may be susceptible to very specific "out-of-band" data packets that are deliberately sent to the server during a TCP/IP session. When they are received, these packets may cause the Windows for Workgroups 3.11-based computer to stop responding (hang).

CAUSE

This problem can occur if certain very specific "out-of-band" data packets are deliberately sent to the server during a TCP/IP session.

RESOLUTION

Microsoft has confirmed this to be a problem in Microsoft Windows for Workgroups 3.11 running Microsoft TCP/IP 32b.

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

MORE INFORMATION

For additional information about out-of-band data issues, see the following articles in the Microsoft Knowledge Base:

Q168747 Update to Windows 95 TCP/IP to Address Out-of-Band Issue

Q143478 Stop 0A in TCPIP.SYS When Receiving Out Of Band (OOB) Data

Additional query words: attack

Keywords : kbnetwork kbtool wfwg
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbprb