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Sonicwall and Layer 3 Meraki Switch

Closey1200Closey1200 Newbie ✭
in Entry Level Firewalls

Hi All,

If I was to set up my Meraki core switch as a layer 3 doing all the inter-vlan'ing and routing like the diagram below (very simple diagram I know), would I need to configure something like the answer to this post:

https://community.sonicwall.com/technology-and-support/discussion/1382/sonicwall-and-layer-3-device-configuration

I want all our vlans to be able to talk to each other and get outbound access to the internet upstream. Do I need to create an object group like they've suggested including all vlans and to them create a static route?

image.png

Many Thanks All 😁

Category: Entry Level Firewalls
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Best Answer

  • CORRECT ANSWER
    BWCBWC Cybersecurity Overlord ✭✭✭
    Answer ✓

    @Closey1200 yes, you need an Address Group which holds 10.0.0.0/24, 10.0.6.0/24 and 10.0.12.0/24, then add a route Source Any, Destination <that group>, interface (x0 or whatever fits), gateway 10.0.0.254 (new object).

    This is necessary otherwise all Packets from 10.0.6.0/24 and 10.0.12.0/24 would get dropped because of anti spoofing detection (and prevention).

    —Michael@BWC

Answers

  • Closey1200Closey1200 Newbie ✭

    Thank you Michael, that's the answer I was looking for. Than you for the quick response.

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