To specify an entire IP range you will need to add an IP from that range and then specify the range’s network mask. To do that – first click on the Add IP Address button and select the ‘Advanced’ level of experience option. Then you can choose a specific mask CIRD value (between 32 – 28) from the right-hand drop-down list.
CIDR Reference Table
| Mask | CIDR | Number of hosts added |
|---|---|---|
| 255.255.255.255 | 32 | 1 |
| 255.255.255.254 | 31 | 2 |
| 255.255.255.252 | 30 | 4 |
| 255.255.255.248 | 29 | 8 |
| 255.255.255.240 | 28 | 16 |
