This guide will be based around PfSense version 2.3.x. It will shown how to Port Forward to a specific host to enable the flow of traffic aimed at your network that is supposed to be forwarded to a specific host or a load balancer in front of many other hosts.
This guide will help you set up a Gitea server on OpenBSD 6.3 with PostgreSQL and using the built in OpenBSD httpd server. The following guide is still applicable to OpenBSD 6.4 without modification.
We will be going over creating a tftp server to PXE boot from to do autoinstalls. DHCP server configuration will not be gone over, you will need to edit whichever DHCP server you are using separately but please note you do need to do some setup there as well. Search for what to set for your DHCP server, but for pfSense in the DHCP server options I just need to set ‘Next server’ to the PXE server IP address and ‘Default BIOS file name’ to the value of pxeboot.
This is my current make.conf, I am sharing it for the sake of reference.