Hi, today I find out how to disable network validation when connecting to an AP on KT.
On KT, in the file /etc/upstart/wifid.conf:
# If the WIFI_NO_NET_PROBE flag file is present in the userstore,
# pass the '-n' option to wifid to disable network validation
# when connecting to an AP.
[ -e /mnt/us/WIFI_NO_NET_PROBE ] && PARAMS="$PARAMS -n" || true
exec wifid -f $PARAMS $ARGS
So I just touch a file called WIFI_NO_NET_PROBE on the root of usb drive:
# touch /mnt/us/WIFI_NO_NET_PROBE
# restart wifid
Now you can connect to any wireless AP, even the one which needs web login through a browser, such as those in the university campus.
Hope this information is helpful for you.