You have the option of configuring an AP with NAT functionality. You plug it into ISPs modem or switch or whatever you have there, you setup the Internet connection in the GUI and then:
1. Setup local subnets in the menus
2. Setup a WLAN and configure whatever you need PLUS
3. configure "Packet Forwarding" to "Local Subnet NAT and Route to WAN" and choose the local subnet that you've setup earlier
4. Hit apply
For details see page 116 of the indoor AP user manual found here
https://support.ruckuswireless.com/pr...
Hope this helps