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Deny access between to networks on one interface

Hi.
We have sophos sg 310 UTM. We have internal networks 192.168.0.0/23 and 192.168.4.0/24 on one of the interface. When i try to connect wifi router which is in 192.168.4.0/24 via web interface example: https://192.168.4.2 from network 192.168.0.0/23 connection is success. We need block any connection from 192.168.0.0/23 to 192.168.4.0/24 except one ip(192.168.0.3) address. Is it possible via firewall rule? if yes, what should it look like?

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Vivek Jagad over 2 years ago

Hello Besik Chitidze,

Thank you for reaching out to the community, Firewall rules work from top to bottom fashion, you if the traffic for both the subnets do reach on the FW i.e. [192.168.0.0/23 to 192.168.4.0/24] then you may create a FW rule with both subnets in source and destination with action drop/reject and then create another rule on top of that rule for [192.168.0.3] with the action allow.

Thanks & Regards,
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Vivek Jagad | Team Lead, Technical Support, Global Customer Experience

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