Place the Router in Your Perimeter Network
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2
For optimal security, place both the answering router and the calling router in a perimeter network at their respective sites. For more information about VPN routers and perimeter networks, see "VPN servers and firewall configuration" in Help and Support Center for Windows ServerĀ 2003.