Adding Wifi Network to an Already Secured Network

[heddoc33]

Sorry if this has already been discussed. Couldn't find on a search.

I have a small secured network in my office with a modem/router networking three computers wirelessly. I would like to add another router that would allow clients in the waiting room of my office to have internet access. Could you assist me in a setup or map? I already have a wireless Linksys router available to use as the second router.

Thank You

 

[DelJo63]

Are those in the waiting room to be allowed into OR forbidden access to your Lan systems?

You already have

modem---router----your.lan.systems

to Isolate the W.R from your lan, connect

modem---router----your.lan.systems (assumed 192.168.1.x or 0.x)
              |
              +---new router (new channel+ssid+no encryption)
                    set LAN addresses and DHCP for 192.168.10.x

add firewall rule to ALL your existing LAN systems to deny src address range=192.168.10.0 thru 10.255