Block IP address ranges not just individuals

I’ve had massive IP outputs from the modem to the outside world for a few days now, even when I disconnect all networks

Can I block ip address ranges in the firewall, not just individual ones

Zb - - - - -


add network to network group is noted as
Subnet 255,255.252.0
so the second one - 93.184.223,255
= “”
I used a online CIDR calculator

You may want look up who owns the CIDR first.
Add to firewall rule.
Add CIDR of each group one at a time.

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Thanks work