Routing from wan to lan

[partove]

I want access to internet with public ip from a ISP with wireless link and I put the pf machine as a router and firewall . accordance with attach  image what setting I do on the pf machine?

[viragomann]

Set up pfSense WAN interface IP to 172.37.37.1, subnet /30. Set the WAN gateway to 172.37.37.2.
On LAN side you may use DHCP or set up a private network of your choice.
There should be nothing more to do to access internet.