@ghelfrich919 There is no routing in that setup.. You have 1 network shown 192.168.102.0/24 - pfsense has ZERO to do with devices in that network talking to each other.,.
Maybe dns was down? but in that setup as drawn pfsense could be off and 192.168.102.x could talk to 192.168.102.y
Unless your drawing is suppose to show some other downstream network via that 192.168.1 network? But the way you have that drawn would assume that is your internet. You list it having a gateway..
Where is the internet in that drawing - did you just leave it off? But if the internet is some other interface on pfsense - and it was down pfsense would still route its other local networks.
When your internet goes down, can you ping 192.168.102.65 from something else in the 192.168.102 network?