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How To Prevent Simple DDoS Attacks On A VPS

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Reading Time: 2 minutes

DDoS attacks are a very real threat to businesses, and you need to be prepared for them. Luckily, there are steps you can take to protect yourself from this type of attack. In this blog post, I’ll explain what a DDoS attack is and how you can prevent them on your VPS (Virtual Private Server) or dedicated server.


A Distributed Denial of Service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. By targeting the DNS name server, the attack floods your VPS with traffic and makes it crash or become unresponsive.

DDoS attacks are also called volumetric attacks because they use a large number of computers or devices to flood a single target with data requests, thereby disrupting its services. This type of attack can be executed in different ways, including using bots (internet-connected software), zombies (infected computers), and cloud services like Amazon Web Services (AWS) or Fusion Arc Hosting (FAH).


To start the process of preventing DDoS attacks on a VPS, you need to first use a firewall and IpSets. With these tools, you can block IPs that are found suspicious.

You can also send traffic to blackhole so that they will not reach your site. You should also use filtering according to ip addresses. This way, only legitimate users can access it while others are blocked or filtered out.


A black hole is a device that will not respond to any requests. This can be done by sending all traffic to a dummy IP address or server, which will ignore it. The only way for someone to get around this method is if they know exactly where the server is located, but we will get into that later on in this article.


  • SYN flood is a type of DDoS attack that exploits the three-way handshake that occurs during TCP communication.
  • A SYN flood attack involves a large number of computers from around the world sending spoofed TCP packets with an invalid source IP address (the attacker’s computer) to a target computer on a network, but leaving out the required return packet with the ACK sequence number, thus blocking any responses from reaching the victim host or server and overloading it by tying up its resources.


There are many ways to prevent DDoS attacks on your VPS. Some of these work better than others, but all of them will help give you peace of mind that your site won’t be taken down by a simple DDoS attack.

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