C#添加删除防火墙例外（程序、端口）

一、 添加 COM 引用

在引用里，选择 COM 页， 找到 NetFwTypeLib , 确定即可

二、 添加允许通过防火墙的例外程序

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Text;  
using NetFwTypeLib;  
  
namespace Common  
{  
    public static class INetFwManger  
    {  
        /// <summary>  
        /// 添加防火墙例外端口  
        /// </summary>  
        /// <param name="name">名称</param>  
        /// <param name="port">端口</param>  
        /// <param name="protocol">协议(TCP、UDP)</param>  
        public static void NetFwAddPorts(string name, int port, string protocol)  
        {  
            //创建firewall管理类的实例  
            INetFwMgr netFwMgr = (INetFwMgr)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwMgr"));  
  
            INetFwOpenPort objPort = (INetFwOpenPort)Activator.CreateInstance(  
                Type.GetTypeFromProgID("HNetCfg.FwOpenPort"));  
  
            objPort.Name = name;  
            objPort.Port = port;  
            if (protocol.ToUpper() == "TCP")  
            {  
                objPort.Protocol = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP;  
            }  
            else  
            {  
                objPort.Protocol = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_UDP;  
            }  
            objPort.Scope = NET_FW_SCOPE_.NET_FW_SCOPE_ALL;  
            objPort.Enabled = true;  
  
            bool exist = false;  
            //加入到防火墙的管理策略  
            foreach (INetFwOpenPort mPort in netFwMgr.LocalPolicy.CurrentProfile.GloballyOpenPorts)  
            {  
                if (objPort == mPort)  
                {  
                    exist = true;  
                    break;  
                }  
            }  
            if (!exist) netFwMgr.LocalPolicy.CurrentProfile.GloballyOpenPorts.Add(objPort);  
        }  
        /// <summary>  
        /// 将应用程序添加到防火墙例外  
        /// </summary>  
        /// <param name="name">应用程序名称</param>  
        /// <param name="executablePath">应用程序可执行文件全路径</param>  
        public static void NetFwAddApps(string name, string executablePath)  
        {  
            //创建firewall管理类的实例  
            INetFwMgr netFwMgr = (INetFwMgr)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwMgr"));  
  
            INetFwAuthorizedApplication app = (INetFwAuthorizedApplication)Activator.CreateInstance(  
                Type.GetTypeFromProgID("HNetCfg.FwAuthorizedApplication"));  
  
            //在例外列表里，程序显示的名称  
            app.Name = name;  
  
            //程序的路径及文件名  
            app.ProcessImageFileName = executablePath;  
  
            //是否启用该规则  
            app.Enabled = true;  
  
            //加入到防火墙的管理策略  
            netFwMgr.LocalPolicy.CurrentProfile.AuthorizedApplications.Add(app);  
  
            bool exist = false;  
            //加入到防火墙的管理策略  
            foreach (INetFwAuthorizedApplication mApp in netFwMgr.LocalPolicy.CurrentProfile.AuthorizedApplications)  
            {  
                if (app == mApp)  
                {  
                    exist = true;  
                    break;  
                }  
            }  
            if (!exist) netFwMgr.LocalPolicy.CurrentProfile.AuthorizedApplications.Add(app);  
        }  
        /// <summary>  
        /// 删除防火墙例外端口  
        /// </summary>  
        /// <param name="port">端口</param>  
        /// <param name="protocol">协议（TCP、UDP）</param>  
        public static void NetFwDelApps(int port,string protocol)  
        {  
            INetFwMgr netFwMgr = (INetFwMgr)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwMgr"));  
            if (protocol == "TCP")  
            {  
                netFwMgr.LocalPolicy.CurrentProfile.GloballyOpenPorts.Remove(port, NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP);  
            }  
            else  
            {  
                netFwMgr.LocalPolicy.CurrentProfile.GloballyOpenPorts.Remove(port, NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_UDP);  
            }  
        }  
        /// <summary>  
        /// 删除防火墙例外中应用程序  
        /// </summary>  
        /// <param name="executablePath">程序的绝对路径</param>  
        public static void NetFwDelApps(string executablePath)  
        {  
            INetFwMgr netFwMgr = (INetFwMgr)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwMgr"));  
  
            netFwMgr.LocalPolicy.CurrentProfile.AuthorizedApplications.Remove(executablePath);  
  
        }  
    }  
}  

　　转载：http://sdfiyon.iteye.com/blog/1197511