Cannot manage NSX-V DFW rules in the VMware Cloud Director UI after upgrading from 10.5.1 to 10.6.x versions.
VMware Cloud Director 10.6.x
This is a known issue in VMware Cloud Director 10.6.x versions.
Changes in VMware Cloud Director 10.6 versions to enable the Three-Tier Tenancy model inadvertently removed the "Security" tab from NSX-V backed Organizations.
The Engineering team is aware of this issue and plans to address it in an upcoming release of Cloud Director.
As a workaround, the APIs can be used to manage the Distributed Firewall and Distributed Firewall Rules for NSX-V enabled OVDCs.
Example: Enabling a DFW on a OVDC:
https://{{VCD_HOST}}/network/firewall/vdc/{{vdc_id}}.
Once the DWF is enabled, rules can also be added utilizing the APIs.
Full API Guide can be found here: NSX Distributed Firewall Service
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The capability to manage the distributed firewall that were behind the "Security" tab under "Networking" have been moved to the Data Centre Group for NSX-T as per documentation at