sonicwall firewall Need a simple way to stop two networks communicating

i have 4 networks connected to firewall and all routed and working fine

now i need to stop 2 networks communicating with each other

need a simple way.
MOhamad fareesAsked:
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Blue Street TechConnect With a Mentor Last KnightCommented:
Hi MOhamad faress,

You can do this simply with Access Rules. I'd need some more information to guide you better. Where is the destination & source? What service are they running on?

Your subnets should be setup as separate Zones (Network > Zones) and you should be running your security principles as least privilege in your environment. For example, all Zones in Firewall > Access Rules should have a Deny/Discard as the default Access Rule (with the lowest priority) for each Zone, then when you need communication between Zones you create specific Access Rule/s above the Deny/Discard Access Rule to open up specific source/destination/service/ports, etc. If you don't want to have any two Zones/subnets to communicate with each other they won't be able to by default if you follow what I outlined above.

Let me know!
Hemil AquinoNetwork EngineerCommented:
create an access rule saying:

deny traffic from LAN1 to LAN2 but permit any other traffic.
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