iPads dropping off WiFi after inactivity (Aerohive / Palo Alto)

[titch]

Afternoon all. got a bit of a conundrum and I am currently looking for a needle in a hack stack.

 

After inactivity, our iPads revert to the unknown device captive portal login. Turn wifi off/on or moving to a new AP sorts the issue out but it is inconvenient at best!

 

Palo losing source user from Aerohive local PSK – seems like timeout after 30 mins with no data transferred.

 

Timeout seems to only happen overnight as that’s the only time the iPads go without communicating through the firewall long enough to drop from Palo Alto firewall.

 

Still not convinced it’s Aerohive as on hivemanager the device still shows as connected with good strength but I am not knowledgeable enough to know if this is a firewall or wireless problem.

 

Any help even if its just a shot in the dark would be greatly appreciated!