Windows NT 4.0 Service Pack 4 or 5 Security Patch: Predictable TCP Initial Sequence Number Vulnerability
Brief Description
Microsoft has released a patch that significantly improves the randomness of the TCP initial sequence numbers (ISNs) generated by the TCP/IP stack in Microsoft® Windows NT® 4.0. Improving the randomness of ISNs eliminates a class of potential attacks against Windows NT 4.0 systems.
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Quick Details
| Version: | TCP-SP5 |
| Date Published: | 12/14/1999 |
| Language: | English |
| Download Size: | 318 KB - 564 |
| *Download size depends on selected download components. |
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Overview
Microsoft has released a patch that significantly improves the randomness of the TCP initial sequence numbers (ISNs) generated by the TCP/IP stack in Microsoft® Windows NT® 4.0. Improving the randomness of ISNs eliminates a class of potential attacks against Windows NT 4.0 systems. 
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System Requirements
- Supported Operating Systems: Windows NT
Windows NT 4.0 Service Pack 4 or 5
-DEC Alpha for q243835sp5a.exe
-Intel for q243835sp5i.exe Top of page
Instructions
- Select "Run this Program from its Current Location" to start the install immediately.
- Select "Save this Program to Disk" to copy the download to your machine for installation at a later time.
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