Zdenek Dohnal wrote:
CUPS discovery is designed to run on secure, private LAN, so it is expected that you have a protection against somebody connecting to your WIFI.
That is (still) a reasonable assumption for a home WiFi WLAN on which a home printer is likely to be located. That is what WPA is for.
Sure, you can connect a notebook or smartphone to untrusted public WiFi networks, but you normally do not print in such a network.
Kevin Kofler