Planning and Installing Planning and Installing a Windows 2000 Remote Access VPN Server
Configuringrras Configuring the Routing and Remote Access Service in Windows 2000
Deploying Router-to-Router VPNs Virtual Private Networking with Windows 2000: Deploying Router-to-Router VPNs
Demand-Dial Routing Demand-Dial Routing and Router-to-Router VPNs in Windows 2000
L2TP/IPSec VPN Client Overview
Microsoft L2TP/IPSec VPN Client Overview

HOW TO: Install and Configure a Virtual Private Network Server in Windows 2000
HOW TO: Install and Configure
links to VPN resources
An Internet Services Network site that provides links to VPN resources for both Windows 2000 and Windows NT.
Internet Authentication Service Internet Authentication Service for Windows 2000 Server

update files
l2tp /ipsec vpn client l2tp /ipsec vpn client
dun 1.4 w98 dun14-98
w98se ver dun14-SE
NAT-T Update L2TP/IPSec NAT-T Update for Windows XP and Windows 2000
w2kbmp