Can we whitelist or blacklist by IP address?

Yes, you can whitelist or blacklist by IP address or by IP address range. The IP address can be specified as a single address, as a network range with a subnet mask, or by CIDR notation:

• Exact: 172.16.1.1
• Netmask: 172.16.1.0/255.255.255.0
• CIDR: 172.16.1.1/24