Configuring IPS Sniffer Mode (SonicWall NSA Series Appliances)
To configure the SonicWall NSA appliance for IPS Sniffer Mode, you will use two interfaces in the same zone for the L2 Bridge-Pair. You can use any interfaces except the WAN interface. For this example, we will use X2 and X3 for the Bridge-Pair, and configure them to be in the LAN zone. The WAN interface (X1) is used by the SonicWall appliance for access to the SonicWall Data Center as needed. The mirrored port on the switch will connect to one of the interfaces in the Bridge-Pair.