通过代码操作防火墙的方式有两种:一是代码操作修改注册表启用或关闭防火墙;二是直接操作防火墙对象来启用或关闭防火墙。不论哪一种方式,都需要使用管理员权限,所以操作前需要判断程序是否具有管理员权限。5 o. A) b7 v% R
1、判断程序是否拥有管理员权限 2 M, N/ ^0 H8 i" z
需要引用命名空间:System.Security.Principal
7 n3 `4 S, \/ y) A /// <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);
}2、注册表修改防火墙
* `8 Q9 ~' a4 o2 v8 e1 a 需要引用命名空间:Microsoft.Win32* X/ u. v1 [' E. G" a6 \6 C
/// <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 = $"注册表修改出错:{e.Message}";
throw new Exception(error);
}
return true;
}3、直接操作防火墙对象 8 W* L% H( J% Y- J6 B$ s! S
需要在项目引用中添加对NetFwTypeLib的引用,并引用命名空间NetFwTypeLib
% L# D. G {/ J" q# s( I5 V
+ E) C% { n. w+ _ /// <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;
}