USG -> NAT
USG -> NAT
Hello, I understand your situation. Your Unifi Security Gateway Pro 4 is connected to your ISP router in Bridge Mode, which means all traffic is managed centrally on the Pro 4. Your ISP requires that any traffic going to the Internet must be routed through Source NAT to your "Public IP/32". To achieve this, you need to configure the Pro 4 to forward traffic destined for the Internet through the appropriate NAT settings. Let me know if you need further guidance.
You receive a single IP address from the ISP, which is a /32 CIDR notation. The USG connects this IP on its WAN interface. Your local network will have an interface like 192.168.1.1 with a 24-host range, and traffic from your LAN to the internet will go through source NAT handled by the USG.