Hi Mark
By default the device will not listen on port 22 when connected to the WiFi this is done to make sure that the device can connect safely to various WiFi networks.
It’s not currently configurable, but as a workaround it is possible to modify the iptables on the device, but just be aware that when you apply an update to the device, it will overwrite any modifications you have made.
I have just made a task to make allowing ssh connections through the WiFi network configurable through the advanced settings section.
Best regards
/Malte