How can I setup NAT with multiple public IPs (/29 subnet) on pfSense?

Our ISP provides a /29 subnet which includes the following IPs:

Network Address: 199.1.1.0
Router/Gateway Address: 199.1.1.1
Usable IP addresses: 199.1.1.2 - 199.1.1.6

I would like each of the 5 public IPs to have their own network (NAT), so for example the 199.1.1.4 public address could have the internal network 192.168.7.0, and public address 199.1.1.5 could have the internal network 192.168.8.0.

I've attempted to set this up using Virtual IPs (IP Alias), 1:1 NAT, Outbound NAT, Gateways, multiple LAN interfaces, VLANs, etc. but so far only the 199.1.1.2 public address ever seems to be used. I'm not sure how to setup pfSense 21.05.2 to use these public IPs as different internal networks.

Solution 1:

I was able to get this working. It involved creating VLANs so the specific ethernet ports could be assigned, creating Virtual IPs (IP Alias type), and creating port forwards and firewall rules which referenced the Virtual IPs. NAT didn't need to be configured.