关于包过滤的防火墙

用c#实现的关于包过滤的防火墙，功能是能根据IP地址过滤掉一些自己不想获取的数据包

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace SimpleSniff
{
    public class App
    {
        [STAThread]
        public static void Main（）
        {
            try
            {
                SniffWindow mainWindow = new SniffWindow（）;
                Application.Run（mainWindow）;

            }
            catch （Exception e）
            {
                MessageBox.Show（e.ToString（）+“\n\n“+e.Message“Error Occured!“）;
            }
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        923  2009-10-24 12:36  packet filtering firewall\Backup\IP数据包过滤.sln

    ..A..H.     25088  2009-10-27 13:57  packet filtering firewall\Backup\IP数据包过滤.suo

     文件        568  2009-10-25 09:05  packet filtering firewall\Backup\SimpleSniff\App.cs

     文件      30214  2009-10-25 15:58  packet filtering firewall\Backup\SimpleSniff\imag\VeryCD.ico

     文件       6932  2009-10-26 13:55  packet filtering firewall\Backup\SimpleSniff\MainForm.cs

     文件      12821  2009-10-26 13:55  packet filtering firewall\Backup\SimpleSniff\MainForm.Designer.cs

     文件     332046  2009-10-26 13:55  packet filtering firewall\Backup\SimpleSniff\MainForm.resx

     文件       1434  2009-10-24 12:12  packet filtering firewall\Backup\SimpleSniff\Properties\AssemblyInfo.cs

     文件       2851  2009-10-24 12:12  packet filtering firewall\Backup\SimpleSniff\Properties\Resources.Designer.cs

     文件       5612  2009-10-24 12:12  packet filtering firewall\Backup\SimpleSniff\Properties\Resources.resx

     文件       1096  2009-10-24 12:12  packet filtering firewall\Backup\SimpleSniff\Properties\Settings.Designer.cs

     文件        249  2009-10-24 12:12  packet filtering firewall\Backup\SimpleSniff\Properties\Settings.settings

     文件       5801  2009-10-26 09:30  packet filtering firewall\Backup\SimpleSniff\SimpleSniff.csproj

     文件        508  2009-10-24 14:51  packet filtering firewall\Backup\SimpleSniff\SimpleSniff.csproj.user

     文件      14480  2009-10-26 13:44  packet filtering firewall\Backup\SimpleSniff\SniffSocket.cs

     文件      30214  2009-10-25 22:58  packet filtering firewall\Backup\SimpleSniff\VeryCD.ico

     文件        923  2011-10-19 15:11  packet filtering firewall\IP数据包过滤.sln

    ..A..H.     27648  2011-10-19 15:12  packet filtering firewall\IP数据包过滤.suo

     文件        568  2009-10-25 09:05  packet filtering firewall\SimpleSniff\App.cs

     文件     270848  2011-10-19 15:11  packet filtering firewall\SimpleSniff\bin\Debug\SimpleSniff.exe

     文件      56832  2011-10-19 15:11  packet filtering firewall\SimpleSniff\bin\Debug\SimpleSniff.pdb

     文件      11608  2011-10-19 15:11  packet filtering firewall\SimpleSniff\bin\Debug\SimpleSniff.vshost.exe

     文件      30214  2009-10-25 15:58  packet filtering firewall\SimpleSniff\imag\VeryCD.ico

     文件       6932  2009-10-26 13:55  packet filtering firewall\SimpleSniff\MainForm.cs

     文件      12821  2009-10-26 13:55  packet filtering firewall\SimpleSniff\MainForm.Designer.cs

     文件     332046  2009-10-26 13:55  packet filtering firewall\SimpleSniff\MainForm.resx

     文件       6430  2011-10-19 15:11  packet filtering firewall\SimpleSniff\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        608  2011-10-19 15:11  packet filtering firewall\SimpleSniff\obj\Debug\GenerateResource-ResGen.read.1.tlog

     文件        700  2011-10-19 15:11  packet filtering firewall\SimpleSniff\obj\Debug\GenerateResource-ResGen.write.1.tlog

     文件       3962  2011-10-19 15:11  packet filtering firewall\SimpleSniff\obj\Debug\SimpleSniff.csproj.FileListAbsolute.txt

............此处省略39个文件信息