Will it be possible to limit the speed by IP if I flash OpenWRT?

Question

network hardware

There is a D-link DIR 615 router. It is necessary to limit the speed for several IP addresses, this cannot be done on standard firmware, can it be implemented on Open WRT?
And yet - is it possible to block access to certain pages for certain IPs? (on OpenWRT)

Answer 1

1. Yes
2. also yes - this is already a firewall. through LUCI . Or read about iptables - the same thing, but through the console.