i setup up a firewall rule
option name 'Block-All-Sites'
option src 'lan'
option dest 'wan'
option family 'ipv4'
option target 'REJECT'
then add this to a script and run every 3 mins
iptables -I FORWARD -d time.windows.com -j ACCEPT
but after some time i cannot access the website anymore because the website uses cdn so the ip address changes all the time, unless i run the script again i cannot access the website.
is there another option to whitelist the domains and make it more stable?