PPPoe server with radius (radiator)

[azfar]

Hi I am using pppoe server with radius authentication system. Radius server on remote host is radiator and listing on 1645 and 1646 and is behind firewall.

I checked my firewall logs and found tha pfsense pppoe server send the packets to radius on port 1812.

How do I change the port or I am doing something wrong.