You can configure firewall sections and firewall rules for the bridge port of a layer 2 bridge-backed logical switch. The bridge must be created using NSX Edge nodes.
Prerequisites
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Verify that the switch is attached to a bridge profile. See Extend an Overlay Segment to a VLAN or a Range of VLANs in Manager Mode.
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Verify that Manager mode is selected in the NSX Manager user interface. See NSX Manager. If you do not see the Policy and Manager mode buttons, see Configure the User Interface Settings.