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Page 152 SonicWALL Internet Security Appliance Administrator’s Guide
VPN Single-Armed Mode (stand-alone VPN gateway)
Note: This feature is available only on the PRO 100, 200, 300, 230, 330, and GX series.
VPN Single-Armed Mode allows you to deploy a SonicWALL with single port (WAN) utilized as a VPN
tunnel termination point. Clear text traffic is routed to the single interface and the data is
encapsulated to the appropriate IPSec gateway.
An example of a deployment is to place the SonicWALL between the existing firewall and the router
connected to the Internet. Traffic is sent in clear text to the SonicWALL, then encrypted and sent to
the appropriate VPN Gateway.
Alert VPN Single Armed Mode can only be enabled if the SonicWALL is in Standard mode on the
Network tab. If you are not using Standard for your Network mode, a warning message is displayed.
If VPN Single-Armed Mode (stand-alone VPN gateway) is enabled, a warning message appears as
follows:
Click OK to enable the SonicWALL in VPN Single Armed Mode.