ProhibitIpSec

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Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

HKLM\SYSTEM\CurrentControlSet\Services\RasMan\Parameters

Data type Range Default value

REG_DWORD

0 | 1

 

Description

Prevents Routing and Remote Access from conducting IP security (IPSec) negotiation on calls using Layer Two Tunneling Protocol (L2TP).

By default, Routing and Remote Access combines L2TP and IPSec to provide secure remote communication. If the value of this entry is 1, then L2TP calls are not secure.

Value Meaning

0

Routing and Remote Access conducts IPSec negotiation on L2TP calls.

1

Routing and Remote Access does not conduct IPSec negotiation on L2TP calls.

This entry does not exist in the registry by default. You can add it by using the registry editor Regedit.exe.