Microsoft KB Archive/888711

= Site-to-site VPN in ISA Server 2006 or in ISA Server 2004 =

Article ID: 888711

Article Last Modified on 12/4/2007

-

APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2004 Standard Edition
 * Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition
 * Microsoft Internet Security and Acceleration Server 2006 Enterprise Edition
 * Microsoft Internet Security and Acceleration Server 2006 Standard Edition

-





INTRODUCTION
This article lists common scenarios that the &quot;Site-to-Site VPN in ISA Server 2004&quot; document describes solutions for.

Note The information in this document also applies to Microsoft Internet Security and Acceleration (ISA) Server 2006.



MORE INFORMATION
ISA Server 2006 and ISA Server 2004 helps provide secure site-to-site virtual private network (VPN) functionality by using the following three methods:
 * Internet Protocol security (IPSec) tunnel mode
 * Layer Two Tunneling Protocol (L2TP) over IPSec
 * Point-to-Point Tunneling Protocol (PPTP)

Two common site-to-site VPN scenarios are:
 * The site that you are connecting to is using a third-party product as its VPN server. In this scenario, use the IPSec tunnel mode method.
 * The site that you are connecting to is using ISA Server 2006, ISA Server 2004, Microsoft ISA Server 2000, Microsoft Windows Server 2003, or Microsoft Windows 2000 Server as its VPN server. In this scenario, use the L2TP over IPSec method or use the PPTP method. Of these two methods, we consider the L2TP over IPSec method to be more secure.

To view detailed solutions for each of these scenarios, see the &quot;Site-to-Site VPN in ISA Server 2004&quot; document. To download this document, visit the following Microsoft Web site:

http://www.microsoft.com/technet/isa/2004/plan/sitetositevpn.mspx

Keywords: kbhowto kbisa2006swept KB888711

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.