Re: Blaster Virus Defense Problem
From: Larry Brasher (a-lbrash_at_microsoft.com)
Date: 08/17/03
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Date: Sun, 17 Aug 2003 02:25:13 GMT
Hello,
Advanced TCP/IP Filtering
On Windows 2000 systems, where Internet Connection Firewall (ICF) is not
available, the following steps will help block the affected ports so that
the system can be patched. These steps are based on a modified excerpt from
this article: 309798 HOW TO: Configure TCP/IP Filtering in Windows 2000
http://support.microsoft.com/?id=309798
To configure TCP/IP security on Windows 2000:
1. Select "Network and Dial-up Connections" in the control panel.
2. Right-click the interface you use to access the Internet, and then click
Properties.
3. In the "Components checked are used by this connection" box, click
Internet Protocol (TCP/IP), and then click Properties.
4. In the Internet Protocol (TCP/IP) Properties dialog box, click
Advanced.
5. Click the Options tab.
6. Click "TCP/IP filtering", and then click Properties.
7. Select the "Enable TCP/IP Filtering (All adapters)" check box.
8. There are three columns with the following labels:
TCP Ports
UDP Ports
IP Protocols
In each column, you must select the "Permit Only" option.
9. Click OK.
Shane Brasher
MCSE (2000,NT),MCSA, A+
Microsoft Platforms Support
Windows NT/2000 Networking
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