DDoS 保护 VPN：如何防止 DDoS 攻击？

9 月 13, 2023
8 分钟阅读
VPN服务
舒沃吉特

是的，受 DDoS 保护的 VPN 可以通过隐藏您的 IP 地址和加密您的流量来在一定程度上帮助防止 DDoS 攻击。当您的 IP 地址被隐藏时，攻击者就很难找到您的网络，从而更难将您作为目标。确保使用经过测试且可靠的高级 VPN。

此外，VPN 还会加密网络流量，在您的计算机和网络之间创建隧道，从而对您的互联网服务提供商 (ISP) 隐藏活动。然而，值得注意的是，VPN 并不是阻止 DDoS 攻击的万无一失的解决方案。

如果未能正确实施 DDoS 攻击防护，VPN 可能会在多个点出现故障，从而使用户容易受到攻击。因此，建议仅使用经过测试且具有顶级安全标准的优质 VPN 服务。

It is also important to keep in mind that a VPN can help prevent DDoS attacks from happening, but there is no way to stop them once they happen. So let’s talk about DDoS-protected VPNs and how they prevent attacks.

分布式拒绝服务攻击：概述

来源： https://bunny.net/

DDoS 或服务丹尼尔 attack is one type of cyberattack that floods the victim’s website or server with overwhelming networks from multiple sources. Business, organizations, and individuals can be severely damaged by these attacks, resulting in financial losses, reputational damage, and reduced productivity.

攻击者用恶意软件感染多个设备，创建一个名为“受感染设备”的网络 DDoS 僵尸网络。这些设备可以包括计算机、服务器、物联网设备，甚至智能手机。攻击者控制僵尸网络并命令受感染的设备用恶意流量淹没目标服务器或网络。

这种流量洪流可能包含 HTTP 请求、UDP 数据包、ICMP 数据包或其他类型的网络流量。由于传入流量巨大，目标服务器或网络速度减慢或崩溃。

这会阻止合法用户访问网站或服务器提供的服务或资源。 DDoS 攻击可能会导致一系列问题，包括网站、应用程序或整个业务的暂时中断

The motive behind DDoS attacks can vary, including theft, blackmail, launching additional attacks, reputation damage, or causing chaos. Moreover, hackers & activists take down their victim’s website or server for money through this cyberattack.

DDoS attacks are a growing concern for online businesses and individuals alike. In this blog post, we’ll illustrate the key mechanisms behind DDoS-protected VPNs through an informative infographic, showing you how they effectively thwart DDoS attacks and ensure uninterrupted online security

DDoS 攻击有哪些类型？

There are three major types of DDoS attacks: Application level attack, Volumetric attack, and Protocol attack. Let’s discuss them in detail and learn how to prevent them.

应用程序攻击

An app layer DDoS attack, also called a 7 DDoS attack, disrupts an app’s content delivery by targeting its application issues. This type of cyber attack specifically targets the application layer. Its main goal is to cause disruptions in the delivery of content.

来源： https://blogs.blackberry.com/

这些攻击针对 HTTP 和 DNS 等应用层协议，旨在破坏服务或控制应用程序协议。应用程序层攻击是危险且复杂的工具，主要用于攻击面向用户的应用程序和网络。

它们可以不被传统防御系统检测到，同时仍然可以摧毁网站或网络。攻击者通过应用层攻击针对特定服务或协议，使其成为破坏服务的常见方式

应用层 DDoS 攻击的示例包括 HTTP GET/POST 洪水、Slowloris 和 DNS 放大攻击。公司投资 Web 应用程序防火墙、威胁缓解解决方案和 Web 流量监控工具来阻止应用程序层 DDoS 攻击。

体积攻击

A volumetric DDoS attack overwhelms a network or server by flooding it with a large number of data packets. This is done to exhaust the available bandwidth. In these attacks, the target’s resources, such as bandwidth and processing power, are consumed, making it difficult for legitimate users to access the target’s resources.