Hello @moonstruck I have looked at the documentation. I only want to use Flint 1 (AP) as a switch only, no wireless access at this time.
Regarding the firewall rules, yes, I was asking what firewall rules need to be in place on the main router.
About the VPN, I just wanted to mention that I am running a VPN client in case that makes a difference.
@Denisimo the main router IP is 192.168.9.1 and the AP is 192.168.9.115 (currently unreachable). However, I have tried pinging the Flint 1 (AP) from a MacBook on the same subnet (192.168.9.116) and the ping was successful.