Configure Subnets to Advertise to the External Firewall

On the
Tenants
tab, double-click on the name of your tenant.
Select
Networking
Bridge Domains
<your bridge domain>
.
Click
L3 Configurations
.
Click the plus (+) button to the right of
Associated L3 Outs
.
Select the Layer 3 external routed network connection you created in the previous procedure from the
L3 Out
drop-down.
Click
Update
.
Select
Networking
Bridge Domains
<your bridge domain>
Subnets
<externally advertised subnet>
.
Set the Scope to
Advertised Externally
.

Click
Submit
.