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Advanced Features Page 153
Configuring a SonicWALL for VPN Single Armed Mode
You can use the following example information to configure the IP addresses on a SonicWALL for
VPN Single Armed Mode:
To configure a SonicWALL in VPN Single Armed Mode in front of an existing SonicWALL, follow these
steps.
1. Configure the Remote and Corporate SonicWALLs in your preferred networking mode.
2. Configure a VPN SA using IKE and Pre-shared Secret on the Remote SonicWALL using the VPN
SonicWALL WAN IP address, 66.120.118.13, as the IPSec Gateway, and the Corporate
SonicWALL WAN IP address, 66.120.118.25, as the Destination Network.
3. Configure a Static Route on the Local SonicWALL to send network traffic destined for the
Remote SonicWALL to the VPN SonicWALL.
4. Configure the VPN SonicWALL in Standard networking mode.
5. Click Advanced, then Intranet. Select the VPN Single Armed Mode (stand alone VPN gateway)
checkbox, and click Update. A rule is automatically added to the VPN SonicWALL for HTTPS
management from the WAN. The LAN port is disabled when you configure a SonicWALL for VPN
Single Armed mode.
6. Configure a VPN SA using IKE and Pre-shared Secret on the VPN SonicWALL to securely connect
to the Remote SonicWALL. Enter the Remote SonicWALL WAN IP address as the IPSec Gateway
and the Remote SonicWALL LAN IP Address range as the Destination Network, if configuring
“Many to One NAT”.
7. Click Advanced, and then Routes. Enter the Corporate SonicWALL WAN IP address in the Dest.
Network field. Enter the subnet mask in the Subnet Mask field. Enter the Local SonicWALL WAN
IP address as the Gateway, and select WAN from the Link menu. Click Update.
Now that all SonicWALLs are configured, network traffic on the corporate SonicWALL destined for
the remote office is routed to the VPN SonicWALL, encrypted, and sent to the remote SonicWALL.
Remote SonicWALL
Corporate SonicWALL
WAN IP Address: 66.120.118.11 WAN IP Address:66.120.118.25
Subnet Mask: 255.255.255.0 Subnet Mask: 255.255.255.0
LAN IP Address 192.168.1.1 LAN IP Address: 192.168.3.1
Subnet Mask: 255.255.255.0 Subnet Mask: 255.255.255.0
VPN Single Armed Mode SonicWALL
WAN IP Address: 66.120.118.13
Subnet Mask: 255.255.255.0
LAN IP Address: 192.168.2.1
Subnet Mask: 255.255.255.0