Login to Phoenix Firewall, go to Network > Address Object > Click Add
P.S: Always do backup before do any changes on firewall

1. Add Virtual PFsense IP
- Name: [CustomerName] SDN WAN IP
- Zone Assignment: Select TCloudTenantSD
- Type: Host
- IP Address: 172.20.10.xxx

2. Add Public WAN IP
- Name: [CustomerName] Public WAN IP
- Zone Assignment: Select WAN
- Type: Host
- IP Address: 103.86.178.xxx

Go to Network >NAT Policies > Add

1. Add NAT Policies
- Original Source: Any
- Translated Source: Original
- Original Destination: [CustomerName] Public WAN IP
- Translated Destination: [CustomerName] SDN WAN IP
- Original Service: Any
- Translated Service: Original
- Inbound Interface: Any
- Outbound Interface: Any
- Enable NAT Policy: Checked
- Create a Reflexive policy: Checked

Go to Firewall > Access Rules > Add

1. Add Acccess Rules
- Action: Allow
- From: WAN
- To: TCloudTenants
- Source Port: Any
- Service: Any
- Source: Any
- Destination: [CustomerName] Public WAN IP
- Users Included: All
- Users Excluded: None
- Schedule: Always on

Done!