SonicWALL 4500, NSA 5000, 3500 manual Scenario C L2 Bridge Mode, CThird Party Gateway

Scenario C: L2 Bridge Mode

For network installations where the SonicWALL NSA Series is running in tandem with an existing network gateway.

In this scenario, the original gateway is maintained. The SonicWALL NSA Series 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 SonicWALL security appliance can be non-disruptively added to any Ethernet network to provide in-line deep-packet inspection for all traversing IPv4 TCP and UDP traffic. L2 Bridge Mode can pass all traffic types, including IEEE 802.1Q VLANs, Spanning Tree Protocol, multicast, broadcast and IPv6.

To set up this scenario, follow the steps covered in the Initial Setup and the Configuring L2 Bridge Mode sections. If you have completed setup procedures in those sections, continue to the Additional Deployment Configuration section, on page 37 to complete configuration.

CThird Party Gateway

	Internet or
L2 Bridge Link	LAN Segment 2

SonicWALL NSA

Network Security Appliance

NSA

SonicWALL NSA 5000/4500/3500 Getting Started Guide Page 19