Adding additional WAN IP's to pfsense and creating inbound firewall rules

Hi

I have one WAN link into my pfsense box, and have just ordered 2 more ip's from them

this is what they sent me
Network ID : 115.70.180.140
Broadcast : 115.70.180.143  
Useable IPs : 115.70.180.141 - 115.70.180.142 Subnet Mask : 255.255.255.252

i have added the two ip's under virtual IP's
 
115.70.180.141 - 115.70.180.142 as /30

how do i go about setting up a firewall rule to allow port 80 for example from that one public ip ?