illumos subreddit mod here. Just created this topic as a way of trying lemmy out.
It looks like opnsense exposes this on the port forward page. Go to your port 80/443 forward and there is probably an enable NAT reflection option.
Look for something called hairpin NAT or NAT reflection
It looks like opnsense exposes this on the port forward page. Go to your port 80/443 forward and there is probably an enable NAT reflection option.