API IP Access Rules
You can configure a default rule to enable the API to be accessed by all IP addresses or to block all IP addresses from the API using this option. You can then specify a list of exceptions to this rule if required. An exception may be a single IP address or a range.
For example, if the API is set to block IP addresses and you configure an exception which contains IP addresses 192.168.1.0/255.255.255.0, this will allow access from any IP addresses in the range 192.168.1.0 through to 192.168.1.255.