Hello,
Will the clients get an IP from the AP or from the firewall? In either case, I do not see why this would not work.
I am not sure if I completely understood the requirement. Is this your setup?
Client (192.168.1.10) --- AP (192.168.1.9) --- SRX (GW - 192.168.1.1) ---- NAT traffic to Internet
Best Regards,
Vikas
Juniper Internal