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Sonicwall Consider my LAN as IP spoofing

Hi Everyone,

I have a core switch that includes all my VLANs and has a default route leading to my Sonicwall. However, SonicWall is considering any IP from my LAN as spoofing, and the IP spoofing is dropping the packet.

How can I overcome this issue knowing that I already created an access rule to allow the network subnets and a routing rule to forward the traffic to the WAN?


Category: Network Security Manager

Best Answer

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    BWCBWC Cybersecurity Overlord ✭✭✭
    Answer ✓

    @Sam168 do you have a Routing Policy which holds all of your internal Subnets as Destination routed via X0 and your Core Switch as Gateway? This is necessary to teach the Firewall what Subnets to expected besides the X0 Interface Subnet?

    If your Core Switch is connected to a different Interface please adapt.



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