
Chapter 7 VPN
204 X Family LSM User’s Guide V 2.5.1
Options:
Enable
Aggressive
Mode
To enable Aggressive mode, check Enable Aggressive Mode. Aggressive Mode is
required when using dynamic WAN IP addresses. However, this mode is less
secure. By default, the device uses Main Mode. If you select aggressive mode,
configure the Local ID and Peer ID information that will be used to authenticate
the Phase 1 of the IPSec connection.
If Pre-Shared Key is selected for authentication:
•From the Local ID Type drop-down list, select the type of information the
device will use to negotiate Phase 1 of the IPSec connection: IP Address, Email
Address, or Domain Name.
The values for the Local ID Email Address and Domain Name are configured on
the IPSec Configuration page. The Local ID IP address value is the external IP
address.
•From the Peer ID Type drop-down list, select the type of information the
device will use to negotiate Phase 1 of the IPSec connection: IP Address, Email
Address, or Domain Name.
The values for the Peer ID IP Address, Email Address, and Domain Name are
configured from the Create/Edit IP Security Association page.
If X.509 Certificate is selected for authentication:
•The Local ID Type defaults to Distinguished Name.
• From the Peer ID Type drop-down list, select the type of information in the
X.509 certificate that the device will use to negotiate Phase 1 of the IPSec
connection: Distinguished Name, Email Address, or Domain Name. Enter
the appropriate information that is contained in the certificates on the device
and on the remote device.
Enable NAT
Tr av er s a l
Select this option if there is a NAT device between the two VPN devices.
Enable Dead
Peer Detection
Check this option to enable the device to check that the VPN link is still
functioning.
Automatically
connect phase
1 on system
start-up
Check this option to initiate the VPN upon startup with IKE phase 1 proposal
automatically established. Use this option if the device is using a dynamic WAN
IP address.
Automatically
connect phase
2
This option is enabled if “Automatically connect phase 1 on system start-up” is
checked.
Table 7–5: IKE Proposal Phase 1 and Phase 2 Configuration Parameters (Continued)
Parameter Description
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