DHCP Vulnerability Security Issue

This is an Internet security risk that affects ANY Windows 9x/2000 computer configured as a DHCP (Dynamic Host Configuration Protocol) client, and exposes the user to different type of attacks (spoofs): web page hacks, stealing credentials/private information, altering data etc. Do you share songs on Napster or any other similar program?

The "IRDP Router Advertisements spoof" (IRDP = ICMP Router Discovery Protocol, ICMP = Internet Control Message Protocol) was first discovered by a company called LOpht Heavy Industries.

Further more, Microsoft acknowledged this as a potential security risk, has posted a Registry and a VBS (Visual Basic Script) workaround, but has NOT posted an official OS patch.

According to L0pht, most cable modem DHCP clients and large internal organizations are at risk.
The purpose of this article is to show you how to implement the FIX:

Start up Regedit and go to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\NetTrans

Expand the "NetTrans" key -> look in the left hand pane at the 000n sub keys (where n can be any integer number from 0 up to 50) -> click on each one of them -> create a new DWORD Value -> right-click in the right hand pane -> select New -> DWORD -> name it "PerformRouterDiscovery" (with no quotes). Double-click on it and check the Decimal box. Type 0 (zero) and hit OK. Now repeat this under ALL your 000n keys (most likely you'd have more than one). Close the Registry Editor and restart Windows. Done.

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