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SonicOS 5.8.1 Administrator Guide
On the Firewall > Access Rules page, click the Configure icon for the intersection of WAN to
LAN traffic. Click the Configure icon next to the default rule that implicitly blocks uninitiated
traffic from the WAN to the LAN.
In the Edit Rule window, select Allow for the Action setting, and then click OK.
Configure the Network Interfaces and Activate L2B Mode
In this scenario the WAN interface is used for the following:
• Access to the management interface for the administrator
• Subscription service updates on MySonicWALL
• The default route for the device and subsequently the “next hop” for the internal traffic of
the SSL VPN appliance (this is why the UTM device WAN interface must be on the same
IP segment as the internal interface of the SSL VPN appliance)
The LAN interface on the UTM appliance is used to
monitor the unencrypted client traffic
coming from the external interface of the SSL VPN appliance. This is the reason for running in
Layer 2 Bridge Mode (instead of reconfiguring the external interface of the SSL VPN appliance
to see the LAN interface as the default route).
On the Network > Interfaces page of the SonicOS Enhanced management interface, click the
Configure icon for the WAN interface, and then assign it an address that can access the
Internet so that the appliance can obtain signature updates and communicate with NTP.
The gateway and internal/external DNS address settings will match those of your SSL VPN
appliance:
• IP address: This must match the address for the internal interface on the SSL VPN
appliance.
• Subnet Mask, Default Gateway, and DNS Server(s): Make these addresses match your
SSL VPN appliance settings.