Teach you how to use PHP and Vue.js to develop best practices for defending against network scanning attacks

Title: Teach you how to use PHP and Vue.js to develop best practices for defending against network scanning attacks

Network security issues have always been a major challenge in the development of the Internet. Network scanning attacks are a method often used by hackers, which can lead to serious consequences such as unavailability of website services and leakage of user information. In order to protect the security of websites and users, developers need to take a series of measures to defend against network scanning attacks. This article will introduce how to use PHP and Vue.js to develop best practices for defending against network scanning attacks, with code examples.

1. Use honeypot technology

Honeypot technology is a security measure that induces hackers to attack. It will deliberately place some seemingly vulnerable loopholes in the website to attract hackers to scan and attack. When a hacker enters the honeypot, we can record his behavior and take appropriate measures in a timely manner to protect the real website and users.

PHP code example:

<?php
if ($_GET['vulnerable_parameter']) {
    record_attack($_SERVER['REMOTE_ADDR'], $_GET['vulnerable_parameter']);
}
?>

In the above example, we identified the attack behavior by setting the parameter vulnerable_parameter to the honeypot.

2. Implement access restrictions

In order to limit hackers from scanning the system, we can set some access restrictions. For example, you can set the system to only handle a certain number of requests per minute, and requests that exceed the limit will be rejected. Such restrictions can effectively prevent scanning attacks such as brute force cracking.

PHP code example:

<?php
$limit = 100; // 每分钟处理的请求数量限制
$ip = $_SERVER['REMOTE_ADDR'];
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$requests = $redis->get("requests:$ip");

if ($requests && $requests >= $limit) {
    die('访问次数超过限制');
} else {
    $redis->incr("requests:$ip");
    $redis->expire("requests:$ip", 60); // 设置限制时间为1分钟
}
?>

In the above example, we use Redis as the cache system to record the number of requests for each IP and set the validity period to 1 minute.

3. Use verification code to verify

Verification code is a common measure to defend against scanning attacks. By requiring users to enter a correct verification code before proceeding, automated scanning and brute force attacks can be effectively prevented.

Vue.js code example:

<template>
  <div>
    <input v-model="inputCode" type="text" placeholder="请输入验证码">
    <img :src="captchaUrl" @click="refreshCaptcha" alt="验证码">
  </div>
</template>

<script>
export default {
  data() {
    return {
      inputCode: '',
      captchaUrl: '',
    };
  },
  methods: {
    refreshCaptcha() {
      this.captchaUrl = '/api/captcha?' + Math.random();
    },
  },
  mounted() {
    this.refreshCaptcha();
  },
};
</script>

In the above example, we used Vue.js to implement a verification code component. Each time the verification code is refreshed, the server will be requested to return a new verification code image address to prevent hackers from bypassing the verification code through simple image recognition methods.

Through the best practices in the above three aspects, we can effectively defend against network scanning attacks. Of course, network security is a dynamic field, and developers need to constantly learn and understand the latest defense technologies to protect the security of websites and users. I hope the content of this article can provide you with some help.

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