curl --request GET \
  --url https://api.cloud.onidel.com/network/firewalls/{firewall_id}/rules \
  --header 'Authorization: <api-key>'

{
  "firewall_rules": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "group": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "ip_type": "v4",
      "action": "allow",
      "protocol": "tcp",
      "port": "443",
      "subnet": "0.0.0.0",
      "subnet_size": "0",
      "desc": "Allow HTTPS"
    }
  ]
}