CIDR notation, explained
How CIDR notation works: how to read a block like 10.0.0.0/24, how many addresses it covers, and why 0.0.0.0/0 in a cloud firewall rule matters.
How CIDR notation works: how to read a block like 10.0.0.0/24, how many addresses it covers, and why 0.0.0.0/0 in a cloud firewall rule matters.