In this Mikrotik Firewall rule, we will put a Firewall command to allow connections on the IP that we allow, after that we block on all clients with a certain IP range. This time we share in an Ebook, how to implement Block All Clients to access the modem, and allow for multiple IP Addresses, for those of you who need it, you can download the Ebook via the following link. You also can see the tutorial in video below.