Some times peoples dont work and go to social networks like one.lv. In this example I will show you how you can stop this.
Add new address list with name onelv. This list must be updated manually from ripe.net.Search vaule ONELIMITED-NET
/ip firewall address-list add list=onelv address=220.127.116.11/26 add list=onelv address=18.104.22.168/26 add list=onelv address=22.214.171.124/28 add list=onelv address=126.96.36.199/27 add list=onelv address=188.8.131.52/27 add list=onelv address=184.108.40.206/24Create address list with ip witch doesnt have access to one.lv with name blockonelv
/ip firewall address-list add list=blockonelv address=192.168.0.2 add list=blockonelv address=192.168.0.3 add list=blockonelv address=192.168.0.4 add list=blockonelv address=192.168.0.5 add list=blockonelv address=192.168.0.6And now you can create firewall rule witch blocks one.lv for these ips
/ip firewall filter add chain=forward action=drop src-address-list=blockonelv dst-address-list=onelv protocol=tcp dst-port=80