This guide exercises API requests using cURL commands. However,
you can use other API tools such as Postman and RESTClient to
make API requests. By default, PAN-OS uses a self-signed certificate,
so you will need to use -k parameter with cURL requests. Alternatively,
you must replace the self-signed certificate with one from a known certificate
authority. If you have an internal certificate authority, generate
your own certificate and install it on the firewall.