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VC++常用功能开发汇总（专栏文章列表，欢迎订阅，持续更新...）https://blog.csdn.net/chenlycly/article/details/124272585C++软件异常排查从入门到精通系列教程（专栏文章列表，欢迎订阅，持续更新...）https://blog.csdn.net/chenlycly/article/details/125529931C++软件分析工具从入门到精通案例集锦（专栏文章正在更新中...）https://blog.csdn.net/chenlycly/article/details/131405795C/C++基础与进阶（专栏文章，持续更新中...）https://blog.csdn.net/chenlycly/category_11931267.html       本文介绍通过INetFwMgr、INetFwPolicy、INetFwProfile等COM接口去检测防火防是否开启，检测当前进程是否加入了防火墙白名单。

       对于Windows10系统，启动/关闭系统防火墙的页面如下：

        设置允许通过Windows防火墙进行通信的页面如下：

       使用COM组件检测防火墙是否开启、检测程序是否允许通过防火墙进行通信（加入防火墙白名单）的完整代码如下：

BOOL DetectFirewallSettings( BOOL* bExeEnableFW )
{BOOL status = FALSE;HRESULT hr = S_FALSE;INetFwMgr* fwMgr = NULL;INetFwPolicy* fwPolicy = NULL;INetFwProfile* fwProfile = NULL;INetFwAuthorizedApplications *apps = NULL;INetFwAuthorizedApplication  *app = NULL;FW_ERROR_CODE ret = FW_NOERROR;VARIANT_BOOL bFWEnabled;VARIANT_BOOL bDoNoteAllowExceptions;CoInitialize( NULL );try{// Create an instance of the firewall settings manager.hr = CoCreateInstance( __uuidof(NetFwMgr), NULL, CLSCTX_INPROC_SERVER, __uuidof( INetFwMgr), (void**)&fwMgr );if( FAILED( hr ) ){throw FW_ERR_CREATE_SETTING_MANAGER;}// Retrieve the local firewall policy.hr = fwMgr->get_LocalPolicy( &fwPolicy );if( FAILED( hr ) ){throw FW_ERR_LOCAL_POLICY;}// Retrieve the firewall profile currently in effecthr = fwPolicy->get_CurrentProfile( &fwProfile );if( FAILED( hr ) ){throw FW_ERR_PROFILE;}// 1、是否开启了防火墙hr = fwProfile->get_FirewallEnabled( &bFWEnabled );if( FAILED( hr ) ){throw FW_ERR_FIREWALL_IS_ENABLED;}if( bFWEnabled ){// 开启了防火墙，再检测是否允许例外hr = fwProfile->get_ExceptionsNotAllowed( &bDoNoteAllowExceptions );if( FAILED(hr) ){throw FW_ERR_FIREWALL_IS_ENABLED;}if( bDoNoteAllowExceptions ){status = TRUE;}else{// 允许意外// 2、得到授权应用程序hr = fwProfile->get_AuthorizedApplications( &apps );if( FAILED(hr) ){status = TRUE;throw FW_ERR_FIREWALL_IS_ENABLED;}// 3、获取当前进程的进程名TCHAR szPEBuff[MAX_PATH]    = {0};GetModuleFileName( NULL, szPEBuff, MAX_PATH );BSTR bstrTemp = _bstr_t( szPEBuff );// 看当前进程在不在允许列表中hr = apps->Item( bstrTemp, &app );if( FAILED(hr) ){// 不在允许列表中status = TRUE;throw FW_ERR_FIREWALL_IS_ENABLED;}else{//在允许列表中，查看是否允许通过防火墙hr = app->get_Enabled( &bFWEnabled );if( FAILED(hr) ){status = TRUE;throw FW_ERR_FIREWALL_IS_ENABLED;}if( bFWEnabled != VARIANT_FALSE ){status = FALSE;if ( bExeEnableFW != NULL ){*bExeEnableFW = true;}}else{status = TRUE;}}}}}catch( FW_ERROR_CODE nError ){ret = nError;}if( fwPolicy ){fwPolicy->Release();}if( fwMgr ){fwMgr->Release();}CoUninitialize();return status;
}

       上述接口的返回值标识防护墙是否开启，接口的传出参数bExeEnableFW标识当前程序是否允许通过防火墙进行通信。