JAVA端口扫描

import java.net.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TCPThread extends Thread...{ public static InetAddress hostAddress; //最小的端口号 public static int MIN_port; //最大的端口号 public static int MAX_port; //线程总数 private int threadnum; //查询方式：0为ip；1为主机名 public static int type; //ip地址前3位 public static int ip1; //ip地址4~6位 public static int ip2; //ip地址7~9位 public static int ip3; //起始ip地址的最后4位 public static int ipstart; //结束ip地址的最后4位 public static int ipend; //完整的ip地址 public static String ipAll; //扫描的主机名称或ip String hostname = ""; //端口的类别 String porttype = "0"; /**//* *构造函数 */ public TCPThread(String name,int threadnum)...{ super(name); this.threadnum = threadnum; } /**//* *运行函数 */ public void run() ...{ //ip地址 int h = 0; //端口号 int i = 0; Socket theTCPsocket; //根据ip地址进行扫描 if(type == 0)...{ //ip地址循环扫描 for(h = ipstart; h <=ipend; h++)...{ //组成完整的ip地址 ipAll = "" + ip1 + "." + ip2 + "." + ip3 + "." + h; hostname = ipAll; try...{ //在给定主机名的情况下确定主机的 IP 地址 hostAddress=InetAddress.getByName(ipAll); } catch(UnknownHostException e)...{ } //不同的端口循环扫描 for (i = MIN_port+threadnum; i < MAX_port + Integer.parseInt(ThreadScan.maxThread.getText()); i += Integer.parseInt(ThreadScan.maxThread.getText()))...{ try...{ theTCPsocket=new Socket(hostAddress,i); theTCPsocket.close(); ThreadScan.Result.append(hostname+":"+i); //判断端口的类别 switch(i)...{ case 21: porttype = "(FTP)"; break; case 23: porttype = "(TELNET)"; break; case 25: porttype = "(SMTP)"; break; case 80: porttype = "(HTTP)"; break; case 110: porttype = "(POP)"; break; case 139: porttype = "(netBIOS)"; break; case 1433: porttype = "(SQL Server)"; break; case 3389: porttype = "(Terminal Service)"; break; case 443: porttype = "(HTTPS)"; break; case 1521: porttype = "(Oracle)"; break; } //端口没有特定类别 if(porttype.equals("0"))...{ ThreadScan.Result.append("/n"); } else...{ ThreadScan.Result.append(":"+porttype+"/n"); } } catch (IOException e)...{ } } } //扫描完成后，显示扫描完成，并将“确定”按钮设置为可用 if (i==MAX_port+Integer.parseInt(ThreadScan.maxThread.getText()))...{ ThreadScan.Result.append("/n"+"扫描完成..."); //将"确定"按钮设置成为可用 if(!ThreadScan.Submit.isEnabled())...{ ThreadScan.Submit.setEnabled(true); } } } //按照主机名进行端口扫描 if(type == 1)...{ for (i = MIN_port+threadnum; i < MAX_port+Integer.parseInt(ThreadScan.maxThread.getText()); i += Integer.parseInt(ThreadScan.maxThread.getText()))...{ try...{ theTCPsocket=new Socket(hostAddress,i); theTCPsocket.close(); ThreadScan.Result.append(" "+i); switch(i)...{ case 21: porttype = "(FTP)"; break; case 23: porttype = "(TELNET)"; break; case 25: porttype = "(SMTP)"; break; case 80: porttype = "(HTTP)"; break; case 110: porttype = "(POP)"; break; case 139: porttype = "(netBIOS)"; break; case 1433: porttype = "(SQL Server)"; break; case 3389: porttype = "(Terminal Service)"; break; case 443: porttype = "(HTTPS)"; break; case 1521: porttype = "(Oracle)"; break; } //端口没有特定类别 if(porttype.equals("0"))...{ ThreadScan.Result.append("/n"); } else...{ ThreadScan.Result.append(":"+porttype+"/n"); } } catch (IOException e)...{ } } //扫描完成后，显示扫描完成，并将【确定】按钮设置为可用 if (i==MAX_port+Integer.parseInt(ThreadScan.maxThread.getText()))...{ ThreadScan.Result.append("/n"+"扫描完成..."); //将【确定】按钮设置成为可用 if(!ThreadScan.Submit.isEnabled())...{ ThreadScan.Submit.setEnabled(true); } } } } }