curl --request GET \
  --url https://rdp.sh/api/v1/servers/{server}/firewall \
  --header 'Authorization: <api-key>'

{
  "status": true,
  "rules": [
    {
      "pos": 123,
      "type": "in",
      "action": "ACCEPT",
      "proto": "<string>",
      "dport": "<string>",
      "sport": "<string>",
      "source": "<string>",
      "dest": "<string>",
      "comment": "<string>",
      "enable": 123
    }
  ],
  "options": {}
}