FW_H_S2SVPNAuthProt
To configure VPN authentication methods for site-to-site connections initiated by ISA Server
In the console tree of ISA Server Management, click Virtual Private Networks (VPN).
In the details pane, click the Remote Sites tab, and then select the applicable remote network.
On the Tasks tab, click Edit Selected Network.
On the Authentication tab, select the appropriate option for the authentication protocols that the remote VPN gateway will use to authenticate connections initiated by ISA Server.
Note
To open ISA Server Management, click Start, point to All Programs, point to Microsoft ISA Server, and then click ISA Server Management.
For ISA Server 2006 Enterprise Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Arrays, expand Array_Name, and then click Virtual Private Networks (VPN).
For ISA Server 2006 Standard Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Server_Name, and then click Virtual Private Networks (VPN).