在编程控制防火墙前先要有个前提，就是你必须是管理员权限， 这样本例的程序才能用"Run as administrator"的方式运行，并成功修改。 如果你本身就是用Administrator这个用户登录的话，直接运行就行了。 建议最好在这个用户下来调试程序。

　　本程序只是个初始的例子，里面的功能只开发了一部分，各位有兴趣的话可以继续深入运用。 像Vista的防火墙就比较Bt，除了基本设定外，在"Control Panel\Administrative Tools\Windows Firewall with Advanced Security" 还有高级设定，好像用程序都可控制。

　　FireWallManager 程序主要功能有

　　1. public void FireWallTrigger（ bool enable ） //开关防火墙。 貌似在Vista里面有问题，XP sp2好像可以。 但是用INetFwPolicy2.set_FirewallEnabled的方法的话，Vista也能搞定。

　　2. public void FireWallService（ string name， bool enable ） //开关防火墙服务程序，一般里面的 File and Printer Sharing 服务比较有用。

　　3. public bool AddPort（ string portName， int portNumber， string protocol ） // 开启一个端口。

　　4. public bool RemovePort（ int portNumber， string protocol ） //删除开启的端口

　　5. public bool AddAplication（ string discriptionName， string fileName ） //开启放行应用程序

　　6. public bool RemoveApplication（ string fileName ） // 关闭放行的应用程序。

　　里面还有个 protected Object getInstance（ String typeName ） 本来是用CLSID来实例化那些接口的，后来发现ProgID其实更简单，不需要查，里面有个规律，只需把接口的INet删掉就是ProgID了。 如 INetFwOpenPort port = （ INetFwOpenPort ）Activator.CreateInstance（ Type.GetTypeFromProgID（ "HNetCfg.FwOpenPort" ） ）； 中 INetFwOpenPort 与 FwOpenPort.

　　首先，创建一个Console程序，在程序中添加引用，在COM对象中找到"NetFwTypeLib" ，添加即可。 防火墙主要是靠这个对象操作的。 貌似不止Vista， Xp也是一样的。核心程序如下：

FireWallManager.cs using System; using System.Collections.Generic; using System.Text; using NetFwTypeLib; namespace FirewallManager { class FwManager { private INetFwMgr NetFwMgr; private INetFwProfile NetFwProfile; private INetFwPolicy2 NetFwPolicy2; //this interface contains lots of usefull functions． public FwManager() { //Create Com Object //Type NetFwMgrType = Type.GetTypeFromCLSID( new Guid( "{304CE942-6E39-40D8-943A-B913C40C9CD4}" ) ); Type NetFwMgrType = Type.GetTypeFromProgID( "HNetCfg.FwMgr" ); object NetFwMgrObject = Activator.CreateIn stance( NetFwMgrType ); NetFwMgr = ( INetFwMgr )NetFwMgrObject; NetFwProfile = NetFwMgr.LocalPolicy.CurrentProfile; Type NetFwPolicy2Type = Type.GetTypeFromProgID( "HNetCfg.FwPolicy2" ); object NetFwPolicy2Object = System.Activator.CreateInstance( NetFwPolicy2Type ); NetFwPolicy2 = ( INetFwPolicy2 )NetFwPolicy2Object; } public void ShowInfo() { switch( NetFwProfile.Type ) { case NET_FW_PROFILE_TYPE_.NET_FW_PROFILE_DOMAIN: Console.WriteLine( "Network Profile Type1: " + "Domain" ); break; case NET_FW_PROFILE_TYPE_.NET_FW_PROFILE_STANDARD: Console.WriteLine( "Network Profile Type1: " + "Standard" ); break; case NET_FW_PROFILE_TYPE_.NET_FW_PROFILE_CURRENT: Console.WriteLine( "Network Profile Type1: " + "Current" ); break; case NET_FW_PROFILE_TYPE_.NET_FW_PROFILE_TYPE_MAX: Console.WriteLine( "Network Profile Type1: " + "Max" ); break; } switch( ( NET_FW_PROFILE_TYPE2_ )NetFwPolicy2.CurrentProfileTypes ) { case NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_DOMAIN: Console.WriteLine( "Network Profile Type2: " + "Domain" ); break; case NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PRIVATE: Console.WriteLine( "Network Profile Type2: " + "Private" ); break; case NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PUBLIC: Console.WriteLine( "Network Profile Type2: " + "Public" ); break; case NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_ALL: Console.WriteLine( "Network Profile Type2: " + "All" ); break; } Console.WriteLine( "Firewall Enabled: " + NetFwProfile.FirewallEnabled ); Console.WriteLine( "Exceptions Not Allowed: " + NetFwProfile.ExceptionsNotAllowed ); Console.WriteLine( "Notifications Disabled: " + NetFwProfile.NotificationsDisabled ); //Console.WriteLine("UnicastResponsestoMulticastBroadcastDisabled: " + NetFwProfile.UnicastResponsestoMulticastBroadcastDisabled); //Remote Admin INetFwRemoteAdminSettings RASettings = NetFwP rofile.RemoteAdminSettings; Console.WriteLine( "Remote Administration Enabled: " + RASettings.Enabled ); switch( RASettings.IpVersion ) { case NET_FW_IP_VERSION_.NET_FW_IP_VERSION_V4: Console.WriteLine( "Remote Administration IP Version: V4" ); break; case NET_FW_IP_VERSION_.NET_FW_IP_VERSION_V6: Console.WriteLine( "Remote Administration IP Version: V6" ); break; case NET_FW_IP_VERSION_.NET_FW_IP_VERSION_MAX: Console.WriteLine( "Remote Administration IP Version: MAX" ); break; case NET_FW_IP_VERSION_.NET_FW_IP_VERSION_ANY: Console.WriteLine( "Remote Administration IP Version: ANY" ); break; } switch( RASettings.Scope ) { case NET_FW_SCOPE_.NET_FW_SCOPE_ALL: Console.WriteLine( "Remote Administration Scope: ALL" ); break; case NET_FW_SCOPE_.NET_FW_SCOPE_CUSTOM: Console.WriteLine( "Remote Administration Scope: Custom" ); break; case NET_FW_SCOPE_.NET_FW_SCOPE_LOCAL_SUBNET: Console.WriteLine( "Remote Administration Scope: Local Subnet" ); break; case NET_FW_SCOPE_.NET_FW_SCOPE_MAX: Console.WriteLine( "Remote Administration Scope: MAX" ); break; } // ICMP INetFwIcmpSettings icmpSettings = NetFwProfile.IcmpSettings; Console.WriteLine( "ICMP Settings:" ); Console.WriteLine( " AllowOutboundDestinationUnreachable: " + icmpSettings.AllowOutboundDestinationUnreachable ); Console.WriteLine( " AllowOutboundSourceQuench: " + icmpSettings.AllowOutboundSourceQuench ); Console.WriteLine( " AllowRedirect: " + icmpSettings.AllowRedirect ); Console.WriteLine( " AllowInboundEchoRequest: " + icmpSettings.AllowInboundEchoRequest ); Console.WriteLine( " AllowInboundRouterRequest: " + icmpSettings.AllowInboundRouterRequest ); Console.WriteLine( " AllowOutboundTimeExceeded: " + icmpSettings.AllowOutboundTimeExceeded ); Console.WriteLine( " AllowOutboundParameterProblem: " + icmpSettings.AllowOutboundParameterProblem ); Console .WriteLine( " AllowInboundTimestampRequest: " + icmpSettings.AllowInboundTimestampRequest ); Console.WriteLine( " AllowInboundMaskRequest: " + icmpSettings.AllowInboundMaskRequest ); // Gloabal Open ports foreach( INetFwOpenPort port in NetFwProfile.GloballyOpenPorts ) { Console.WriteLine( "Open port: " + port.Name + ":" + port.Port + ", " + port.Protocol + " " + port.Enabled ); } // Services foreach( INetFwService serv in NetFwProfile.Services ) { Console.WriteLine( "Service: " + serv.Name + ": " + serv.Enabled ); } // Autorised Applications foreach( INetFwAuthorizedApplication app in NetFwProfile.AuthorizedApplications ) { Console.WriteLine( "AuthorizedApplication: " + app.Name + ": " + app.Enabled ); } Console.WriteLine(); } public void FireWallTrigger( bool enable ) { try { NetFwProfile.FirewallEnabled = enable; } catch( Exception e ) { Console.WriteLine( e.Message ); } //try //{ // NetFwPolicy2.set_FirewallEnabled( NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PRIVATE, enable ); //} //catch( Exception e ) //{ // Console.WriteLine( e.Message ); //} Console.WriteLine( "FireWall Enabled: " + NetFwProfile.FirewallEnabled ); } public bool FireWallState() { return NetFwProfile.FirewallEnabled; } public void FireWallService( string name, bool enable ) { try { foreach( INetFwService serv in NetFwProfile.Services ) { if( serv.Name.ToUpper() == name.ToUpper() ) { serv.Enabled = enable; Console.WriteLine( "Service: " + serv.Name + ": " + serv.Enabled ); return; } } Console.WriteLine( "The service '{0}' does not exist!", name ); } catch( Exception e ) { Console.WriteLine( e.Message ); } } private NET_FW_IP_PROTOCOL_ GetProtocol( string protocol ) { NET_FW_IP_PROTOCOL_ prot; if( protocol.ToUpper() == "TCP" ) prot = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP; else if( protocol.ToUpper() == "UDP" ) prot = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_UDP; else prot = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_ANY; return prot; } public bool AddPort( string portName, int portNumber, string protocol ) { try { INetFwOpenPort port = ( INetFwOpenPort )Activator.CreateInstance( Type.GetTypeFromProgID( "HNetCfg.FwOpenPort" ) ); port.Name = portName; port.Port = portNumber; port.Protocol = GetProtocol( protocol ); port.Enabled = true; NetFwProfile.GloballyOpenPorts.Add( port ); return true; } catch( Exception e ) { Console.WriteLine( e.Message ); } return false; } public bool RemovePort( int portNumber, string protocol ) { try { NetFwProfile.GloballyOpenPorts.Remove( portNumber, GetProtocol( protocol ) ); return true; } catch( Exception e ) { Console.WriteLine( e.Message ); } return false; } public bool AddAplication( string discriptionName, string fileName ) { try { INetFwAuthorizedApplication app = ( INetFwAuthorizedApplication )Activator.CreateInstance( Type.GetTypeFromProgID( "HNetCfg.FwAuthorizedApplication" ) ); app.Name = discriptionName; app.ProcessImageFileName = fileName; app.Enabled = true; NetFwProfile.AuthorizedApplications.Add( app ); return true; } catch( Exception e ) { Console.WriteLine( e.Message ); } return false; } public bool RemoveApplication( string fileName ) { try { NetFwProfile.AuthorizedApplications.Remove( fileName ); return true; } catch( Exception e ) { Console.WriteLine( e.Message ); } return false; } protected Object getInstance( String typeName ) { if( typeName == "INetFwMgr" ) { Type type = Type.GetTypeFromCLSID( new Guid( "{304CE942-6E39-40D8-943A-B913C40C9CD4}" ) ); return Activator.CreateInstance( type ); } else if( typeName == "INetAuthApp" ) { Type type = Type.GetTypeFromCLSID( new Guid( "{EC9846B3-2762-4A6B-A214-6ACB603462D2}" ) ); return Activator.CreateInstance( type ); } else if( typeName == "INetOpenPort" ) { Type type = Type.GetTypeFromCLSID( new Guid( "{0CA545C6-37AD-4A6C-BF92-9F7610067EF5}" ) ); return Activator.CreateInstance( type ); } else return null; } } }

本篇新闻：在Vista中编程控制防火墙设定-．NET Framework