Hello I am using a MikroTik Router and I tried to do it with firewall but it blocks the whole internet to the client and when i put a filter rule for allowing one website for him its not working here is my rules:
For blocking whole webistes: ip—>firewall—> chain=forward–> Src.Address= 192.168.2.33—> Action=drop
If you do not have rule which will allow established and related connections before these rules, maybe it will not work. In that case create additional rule:
and put it above these 2 rules. You can use this rule as 1st in your whole forward chain ( if you do not have it), but just remove src-add in that case.