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05.28.2003 - Windows Update Q818043



View Microsoft-WindowsXP related news. Microsoft has released an update package to enhance the current functionality of the Layer Two Tunneling Protocol (L2TP) and Internet Protocol security (IPSec) on computers that are running Windows XP or Windows 2000. This update includes improvements to IPSec to better support virtual private network (VPN) clients behind network address translation (NAT) devices by implementing NAT as specified in the Internet Engineering Task Force (IETF) RFC 3193 and draft-02 of the IETF NAT-T specification. The update also includes additional support for stronger IPSec protection by using the 2048-bit Diffie-Hellman algorithm (Group 14).

IPSEC listens on UDP port 500 and UDP port 4500, if a none-Microsoft application or firewall is using the port -or- is being blocked by personal firewall even if the ports are opened by configuring the Personal firewalls advanced options - this problem may occur.

Although this problem may seem like a error, it is in-fact just IPSEC using its default security setting, which is to make the connection safe. But in this case it can unfortunately cause loss of internet functionality.

You can uninstall this update via Add/Remove (Control Panel) as well as being able to call Microsoft Support.

- View Microsoft Knowledge Base Article - 818043
- Visit Microsoft Corporation

NID: 782 / Submitted by: Zero_Tolerance
Categories: Microsoft, OS, Patches and Updates
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