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Forum Discussion
Cannot apply IP filtering with subnet mask on VLAN
Dear all, When I want to configure my Insight managed switch such that devices on certain VLAN's cannot reach certain IP's, a direct declaration of an IP address in the IP filtering section works...
I've attached a screenshot showing I'm editing the 'Deny' option in the background, with the UI bug on the foreground. So this is not what causes the IP filtering rules to not work specifically when applying a mask.
Just to be clear, the above works, but when applying an IP mask (using the range of devices option), it does not work.
Hello,
Discussing with engineering, try using a reverse IP mask. In the IP mask field try 0.0.0.255 and let me know if that helps.
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