DiunaBI/WebAPI/Controllers/PingController.cs

using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace WebAPI.Controllers;

[ApiController]
[Route("api/[controller]")]
[Authorize]
public class PingController : Controller
{
    private readonly IConfiguration _configuration;
    public PingController(
        IConfiguration configuration)
    {
        _configuration = configuration;
    }

    [HttpGet]
    [Route("Ping")]
    [AllowAnonymous]
    public IActionResult Ping()
    {
        return Ok(_configuration["PONG"]);
    }
}