Particulars makes the following network connections which may need to be allowed on your firewall for the described functions to work.
| Host | Protocol/Port | Purpose | Frequency |
|---|---|---|---|
| checkip.amazonaws.com | https (tcp/443) | Discover the public IPv4 address of the Mac | On start, and every refresh of the system information (1 minute interval), if the Network detail is enabled. |
| support-sp.apple.com | https (tcp/443) | Lookup the model name of the Mac | Once for each serial number and locale (Intel only) |
| itunes.apple.com | https (tcp/443) | Check for new version | Weekly |
| in.appcenter.ms | https (tcp/443) | Crash reporting and anonymous analytics | On start, weekly, and during the submission of a crash report |