c# 通过代码开启或关闭防火墙

/// <summary>
/// 判断程序是否拥有管理员权限
/// </summary>
/// <returns>true:是管理员；false:不是管理员</returns>
public static bool IsAdministrator()
{
  WindowsIdentity current = WindowsIdentity.GetCurrent();
  WindowsPrincipal windowsPrincipal = new WindowsPrincipal(current);
  return windowsPrincipal.IsInRole(WindowsBuiltInRole.Administrator);
}

/// <summary>
/// 通过注册表操作防火墙
/// </summary>
/// <param name="domainState">域网络防火墙（禁用：0；启用（默认）：1）</param>
/// <param name="publicState">公共网络防火墙（禁用：0；启用（默认）：1）</param>
/// <param name="standardState">专用网络防火墙（禁用：0；启用（默认）：1）</param>
/// <returns></returns>
public static bool FirewallOperateByRegistryKey(int domainState=1, int publicState = 1, int standardState = 1)
{
  RegistryKey key = Registry.LocalMachine;
  try
  {
    string path = "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\SharedAccess\\Defaults\\FirewallPolicy";
    RegistryKey firewall = key.OpenSubKey(path, true);
    RegistryKey domainProfile = firewall.OpenSubKey("DomainProfile", true);
    RegistryKey publicProfile = firewall.OpenSubKey("PublicProfile", true);
    RegistryKey standardProfile = firewall.OpenSubKey("StandardProfile", true);
    domainProfile.SetValue("EnableFirewall", domainState, RegistryValueKind.DWord);
    publicProfile.SetValue("EnableFirewall", publicState, RegistryValueKind.DWord);
    standardProfile.SetValue("EnableFirewall", standardState, RegistryValueKind.DWord);
  }
  catch (Exception e)
  {
    string error = $"注册表修改出错：{e.Message}";
    throw new Exception(error);
  }
  return true;
}

/// <summary>
/// 通过对象防火墙操作
/// </summary>
/// <param name="isOpenDomain">域网络防火墙（禁用：false；启用（默认）：true）</param>
/// <param name="isOpenPublicState">公共网络防火墙（禁用：false；启用（默认）：true）</param>
/// <param name="isOpenStandard">专用网络防火墙（禁用: false；启用（默认）：true）</param>
/// <returns></returns>
public static bool FirewallOperateByObject(bool isOpenDomain = true, bool isOpenPublicState = true, bool isOpenStandard = true)
{
  try
  {
    INetFwPolicy2 firewallPolicy = (INetFwPolicy2)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwPolicy2"));
    // 启用<高级安全Windows防火墙> - 专有配置文件的防火墙
    firewallPolicy.set_FirewallEnabled(NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PRIVATE, isOpenStandard);
    // 启用<高级安全Windows防火墙> - 公用配置文件的防火墙
    firewallPolicy.set_FirewallEnabled(NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PUBLIC, isOpenPublicState);
    // 启用<高级安全Windows防火墙> - 域配置文件的防火墙
    firewallPolicy.set_FirewallEnabled(NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_DOMAIN, isOpenDomain);
  }
  catch (Exception e)
  {
    string error = $"防火墙修改出错：{e.Message}";
    throw new Exception(error);
  }
  return true;
}