Restrict API access by IP
    You must have Administrator permissions to restrict API access by IP.
Posting sources can be restricted by specifying allowed IP addresses in the 
Settings
 > User Authentication
 > SDK Access Security
 section, as shown in the following image:
Separate multiple IP addresses with commas. If no IP addresses are specified, it is assumed that posting is not limited by IP. If a POST comes from an IP which is not allowed, the request is ignored.