c# - C# SelfHost 如何限制所有外部请求？

Question

我有一个作为后台服务的程序。它托管自托管服务。但是有一个问题。当我托管此服务时，它可用于所有区域设置网络。而且，同一网络中的每个人都可以访问此 API。这是我托管服务的方式：

首先我用 netsh 注册 url

string frm = string.Format(@"http add urlacl url={0}:{1} user={2}\{3}", address, port, domain, user);
            Process.Start(new ProcessStartInfo("netsh", frm)
            {
                Verb = "runas",
                CreateNoWindow = true,
                WindowStyle = ProcessWindowStyle.Hidden,
                UseShellExecute = true
            }).WaitForExit();

然后我托管服务

 _hostConfiguration = new ExtendHttpSelfHostConfiguration(
                string.Concat(url, ":", port))
            {
                MaxReceivedMessageSize = int.MaxValue,
                MaxBufferSize = int.MaxValue 
                
            };
            _server = new HttpSelfHostServer(_hostConfiguration);
            _hostingTask = _server.OpenAsync();
            _hostingTask.Wait();

ExtendHttpSelfHostConfiguration的结构是：

public class ExtendHttpSelfHostConfiguration : HttpSelfHostConfiguration
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="baseAddress"></param>
        public ExtendHttpSelfHostConfiguration(string baseAddress) : base(baseAddress) => Configure();
        /// <summary>
        /// 
        /// </summary>
        /// <param name="baseAddress"></param>
        public ExtendHttpSelfHostConfiguration(Uri baseAddress) : base(baseAddress) => Configure();

        

        /// <summary>
        /// 
        /// </summary>
        /// <param name="httpBinding"></param>
        /// <returns></returns>
        protected override BindingParameterCollection OnConfigureBinding(HttpBinding httpBinding)
        {
           
            if (BaseAddress.ToString().ToLower().StartsWith("https://"))
            {
                httpBinding.Security.Mode = HttpBindingSecurityMode.Transport;
            }
            return base.OnConfigureBinding(httpBinding);
        }

        private void Configure()
        {
            ConfigureCors();
            ConfigureRoutes();
            ConfigureFormatters();
            ConfigureFilters();
            ConfigureProviders();
            ConfigureSwagger();
            ConfigureLogger();
        }



        private void ConfigureSwagger()
        {
            #if DEBUG
            this.EnableSwagger(c =>
            {
                c.SingleApiVersion("v1", "Host services");
                c.DescribeAllEnumsAsStrings();
                c.IncludeXmlComments(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, string.Concat(Assembly.GetExecutingAssembly().GetName().Name + ".xml")));
            }).EnableSwaggerUi();
            #else
            #endif
        }

        private void ConfigureLogger() => XmlConfigurator.Configure();

        private void ConfigureProviders() => FluentValidationModelValidatorProvider.Configure(this);

        private void ConfigureFilters() => Filters.Add(new ValidationFilter());

        private void ConfigureCors() => this.EnableCors(new EnableCorsAttribute("*", "*", "*"));

        private void ConfigureRoutes() => this.MapHttpAttributeRoutes();

        private void ConfigureFormatters()
        {
            Formatters.JsonFormatter.SupportedMediaTypes.Clear();
            Formatters.XmlFormatter.SupportedMediaTypes.Clear();
            Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/json"));
            Formatters.XmlFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/xml"));
            Formatters.OfType<JsonMediaTypeFormatter>().First().SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
        }
    }

它完全适用于本地机器。
但是当我扫描网络时，nmap 可以检测到这个端口。

问题是如何让它只在计算机上工作。其他人不应访问此端口。据我了解，这样做应该是 127.0.0.1而不是0.0.0.0。

我怎么解决这个问题？

我的 PC 中的其他服务是如何工作的？