Connecting pFsense directly to ONT

I am wanting to connect pFsense directly to the ONT and then remove the ISP router that was provided. The following blog (https://www.geekzone.co.nz/forums.asp?topicid=240071), tells me that it is possible, saying

Configure PFSense with DHCP over VLAN 10 (see here: https://www.geekzone.co.nz/forums.asp?forumid=49&topicid=174969)

The WAN is already set at DHCP (getting an IP from the ISP’s router). How do I configure it to do DHCP over VLAN 10?

Create a vlan 10 on the pfsense wan port you are going to use, and use this as your wan connection.

To setup Vlan - In GUI - Interfaces - Vlans. Parent interface will be the wan port, vlan tag will be 10

Interfaces - Interface Assignment - add the vlan port from above and configure it as required

Awesome… all sorted. Thanks