Keepalive problem

Hi guys,

i am trying to solve one problem for a few weeks but without any success. I’ve got wifi hotspot on wirelles atheros AR9300 and i want it works like this: It’s free wifi (without password), so customers can connect and after 2hours it disconnected them. I figure it out by keepalive timeout 2h, but i want to, that if you are disconnected because of keepalive timeout, you can reconnect after 2h.

Any ideas?

Thank you guys.