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Scenario A: NAT Mode Gateway | 35
Scenario C: L2 Bridge Mode
For network installations where the Dell SonicWALL NSA
appliance is running in tandem with an existing network
gateway.
In this scenario, the original gateway is maintained. The Dell
SonicWALL NSA appliance is integrated seamlessly into the
existing network, providing the benefits of deep packet
inspection and comprehensive security services on all network
traffic.
L2 Bridge Mode employs a secure learning bridge architecture,
enabling it to pass and inspect traffic types that cannot be
handled by many other methods of transparent security
appliance integration. Using L2 Bridge Mode, a Dell SonicWALL
security appliance can be non-disruptively added to any
Ethernet network to provide in-line deep-packet inspection for
network traffic.
To set up this scenario, follow the steps covered in:
• "Configuring L2 Bridge Mode" on page 43
C
SonicWALL NSA 2600
CONSOLE
SDHC
MGMT
X6 X4
1GE
X2 X0
M0
X1X3X5X7
ALARM
M0
TEST
PWR
Expansion Module
Network Resources
X1
LAN
Third Party Gateway
L2 Bridge Link
Dell SonicWALL NSA Appliance
Internet or
LAN Segment 2
X0