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   源码介绍

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如果提示找不到 wpcap.dll，请到这里下载win10pcap.msi，并安装，则可以解决这个问题。网址：http://www.win10pcap.org/download/

using PacketDotNet;
using SharpPcap;
using SharpPcap.LibPcap;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using 实验二_端口扫描技术;

namespace 端口扫描小工具
{
    public partial class Form1 : Form
    {
        IPAddress sourceip = NetworkUtils.GetPhysicalIP();
        LibPcapLiveDeviceList devices = null;
        PcapDevice device;
        string way = "Syn Scan";
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            BeginIp.Text = NetworkUtils.GetPhysicalIP().ToString();
            EndIp.Text = NetworkUtils.GetPhysicalIP().ToString();
        }
        private void OneIP_CheckedChanged(object sender, EventArgs e)
        {
            this.EndIp.Text = this.BeginIp.Text;
        }
        private void TcpBegin_Click(object sender, EventArgs e)
        {
            if (Connect.Checked == true)
            {
                way = "Connect Scan";
                Connectscan();
            }
            else
            {
                devices = LibPcapLiveDeviceList.Instance;
                foreach (PcapDevice dev in devices)
                {
                    if (dev.Interface.FriendlyName.ToString() == "WLAN")
                    {
                        device = dev;
                        device.OnPacketArrival  = new PacketArrivalEventHandler(device_OnPackArrival);
                        device.Open(DeviceMode.Promiscuous, 1000);
                        device.StartCapture();
                    }
                }
                long beginip = StringIPToUintIP(this.BeginIp.Text);
                long endip = StringIPToUintIP(this.EndIp.Text);
                ushort beginport = Convert.ToUInt16(this.BeginPort.Text);
                ushort endport = Convert.ToUInt16(this.EndPort.Text);
                progressBar1.Maximum = ((endport - beginport)   1);//设置最大长度值
                progressBar1.Value = 0;//设置当前值
                PhysicalAddress sourceMAC = NetworkUtils.GetMacAddress(sourceip);//源MAC    
                ParameterizedThreadStart threadStart = t =>
                {
                    for (long i = beginip; i <= endip; i  )
                    {
                        IPAddress destionip = NetworkUtils.LongToIPAddress(i);
                        PhysicalAddress destionMAC = NetworkUtils.GetMacAddress(destionip);//目的MAC
                        for (int m = beginport; m <= endport; m  )
                        {
                            UpdateProgressBar(m.ToString());
                            ushort port = Convert.ToUInt16(m);
                            ushort ssport = Convert.ToUInt16(6060);
                            TcpPacket packet = NetworkUtils.CreateTcpPacket(ssport, port, true, false);//第一步构造TCP数据包
                            IPv4Packet ipv4packet = NetworkUtils.CreateIpV4Packet(sourceip, destionip, packet);//第二布构造含有TCP的IP包
                            EthernetPacket enterpacket = NetworkUtils.CreateEthernetPacket(sourceMAC, destionMAC, ipv4packet);//第三步构造以太网数据包
                            device.SendPacket(enterpacket);//发送数据包
                        }
                    }
                };
                Thread thread = new Thread(threadStart);
                thread.IsBackground = true;
                thread.Start();
            }
        }//TCP扫描
        delegate void UpdateProgressBarCallback(object port);
        private void UpdateProgressBar(object port)
        {
            if (progressBar1.InvokeRequired)
            {
                UpdateProgressBarCallback d = new UpdateProgressBarCallback(UpdateProgressBar);
                this.Invoke(d, new object[]{port});
                return;
            }
            this.textBox7.Text = "当前扫描端口" port.ToString();
            progressBar1.Value  = 1;//让进度条增加一次
            float percent = ((float)progressBar1.Value/progressBar1.Maximum)*100;
            label5.Text = percent.ToString()   "%";
        }
        /// <summary>
        /// IP地址转化
        /// </summary>
        /// <param name="ipaddr">字符串的IP地址</param>
        /// <returns>整型的IP地址</returns>
        private long  StringIPToUintIP(string ipaddr)
        {
            string[] ips = ipaddr.Split('.');
            return Convert.ToInt64(ips[3]) * 256 * 256 * 256   Convert.ToInt64(ips[2]) * 256 * 256   Convert.ToInt64(ips[1]) * 256   Convert.ToUInt32(ips[0]);
        }
        private void device_OnPackArrival(object sender, CaptureEventArgs e)//接收到包的处理
        {
            int beginport = int.Parse(this.BeginPort.Text);
            int  endport = int.Parse(this.EndPort.Text);
            string sourceport;
            string destinationport;
            string sourceip;
            var packet = PacketDotNet.Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);//解析出基本包
            var dlpacket = PacketDotNet.DataLinkPacket.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);//协议类别
            var tcpPacket = PacketDotNet.TcpPacket.GetEncapsulated(packet);//TCP数据包
            var ipPacket = PacketDotNet.IpPacket.GetEncapsulated(packet);//TCP数据包
            if (tcpPacket != null)
            {
                var pa = tcpPacket;                
                sourceport = tcpPacket.SourcePort.ToString();
                destinationport = tcpPacket.DestinationPort.ToString();
                sourceip = ipPacket.SourceAddress.ToString();
                if (int.Parse(destinationport) == 6060&&tcpPacket.Syn==true)
                {                   
                    LST.Invoke(new ShowInlist(tcpshowlist), new object[] { sourceport,sourceip });
                }
            }
        }
        private delegate void ShowInlist(object sourceport,object sourceip);
        void tcpshowlist(object sourceport,object sourceip)
        {
            for (int i = 0; i < LST.Items.Count;i   )
            {
                if (sourceport.ToString() == LST.Items[i].Tag.ToString() || sourceport.ToString()=="6060")
                {
                    return;
                }
            }
            ListViewItem lvi = new ListViewItem();
            lvi.Name = "TCP";
            lvi.Text = way;
            lvi.Tag = sourceport.ToString();
            lvi.SubItems.Add(sourceip.ToString());
            lvi.SubItems.Add(sourceport.ToString());
            lvi.SubItems.Add("开放");
            this.LST.Items.Add(lvi);
        }
        private void Connectscan()
        {
            long beginip = StringIPToUintIP(this.BeginIp.Text);
            long endip = StringIPToUintIP(this.EndIp.Text);
            ushort beginport = Convert.ToUInt16(this.BeginPort.Text);
            ushort endport = Convert.ToUInt16(this.EndPort.Text);
            progressBar1.Maximum = ((endport - beginport)   1);//设置最大长度值
            progressBar1.Value = 0;//设置当前值
            ParameterizedThreadStart threadStart = t =>
                {
                    for (long i = beginip; i <= endip; i  )
                    {
                        string x = NetworkUtils.LongToIPAddress(i).ToString();
                        for (int m = beginport; m <= endport; m  )
                        {
                            UpdateProgressBar(m.ToString());
                            bool result = false;
                            TcpClient tc = new TcpClient();
                            //设置超时时间
                            tc.SendTimeout = tc.ReceiveTimeout = int.Parse(timeout.Text);
                            try
                            {
                                //尝试连接
                                tc.Connect(x, m);
                                if (tc.Connected)
                                {
                                    LST.Invoke(new ShowInlist(tcpshowlist), new object[] { m.ToString(), x });
                                }
                            }
                            catch (System.Net.Sockets.SocketException e)
                            {
                                result = false;
                            }
                            finally
                            {
                                tc.Close();
                                tc = null;
                            }
                        }
                    }
                };
            Thread thread = new Thread(threadStart);
            thread.IsBackground = true;
            thread.Start();
          }     //全连接扫描
        private void OnePort_CheckedChanged(object sender, EventArgs e)
        {
            this.EndPort.Text = this.BeginPort.Text;
        }
        private void button2_Click(object sender, EventArgs e)
        {

        } 
    }
}