正在尝试在C#中设置仅L2tp VPN属性

using System;
using System.Management;

namespace VPNConfiguration
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建ManagementScope对象，指定WMI命名空间和计算机名称
            ManagementScope scope = new ManagementScope("\\\\.\\ROOT\\CIMV2");

            // 创建ManagementClass对象，指定WMI类名
            ManagementClass vpnClass = new ManagementClass(scope, new ManagementPath("Win32_NetworkAdapterConfiguration"), null);

            // 获取所有网络适配器配置对象
            ManagementObjectCollection adapters = vpnClass.GetInstances();

            // 遍历每个网络适配器配置对象
            foreach (ManagementObject adapter in adapters)
            {
                // 判断是否为VPN适配器
                if (adapter["Description"].ToString().Contains("VPN"))
                {
                    // 设置L2TP VPN属性
                    adapter["IPSecPermitIPSec"] = true;
                    adapter["IPSecPermitTCPPorts"] = "1701";
                    adapter["IPSecPermitUDPPorts"] = "500,4500";
                    adapter["IPSecPreSharedKey"] = "YourPreSharedKey";

                    // 保存修改
                    adapter.Put();
                }
            }

            Console.WriteLine("L2TP VPN属性设置成功！");
            Console.ReadLine();
        }
    }
}