As a site owner, from the moment you make your website live, the threat of being hacked or infected starts weighing on your mind. Cyber-miscreants are constantly coming up with newer ways to gain access to your website for various reasons. It can be to steal money, access personally identifiable information of your customers, or merely disrupt your website. A Denial of Service or DoS attack is one of the most common types of website attacks. In a DoS attack, the attacker overwhelms your website by sending user requests leading to a crash or a malfunctioning site. Some attackers initiate a DoS attack from multiple sources, which attack all at once. This is called a DDoS or a Distributed Denial of Service attack. Today, we will talk about DDoS talks and how you can keep your VPS-Hosted website protected from DDoS attacks.

A VPS Server is highly secure. However, as long as the site is online, there is always a threat of a DDoS attack. Since these attacks are initiated by sending multiple user requests, there are no specific signs that can trigger any alarms and protect your site. Hence, you need to keep your VPS-Hosted site protected from these attacks. Here are some tips:

Configure a Firewall

First and foremost, configure a firewall on your VPS and use it. Also, stop any service that you don’t use and avoid running other services on your VPS that hosts your website.

A firewall is effective against DDoS attacks since it closes all ports and only keeps those ports open that browsers can connect to. Usually, in a DDoS attack, connections to other ports are from bots, and rejecting them is better.

Protection from different types of DDoS attacks

DDoS attacks are of different types:

  • HTTP flood
  • ICMP flood
  • UDP flood
  • SYN-flood

Based on the type of attack, you can implement countermeasures.

  • HTTP flood

This is one of the most basic types of DDoS attacks where your VPS Server is forced to allocate maximum resources while responding to each HTTP request.

If you want to counter an HTTP flood attack, you need an optimized web server. You can analyze your website’s access log and identify a pattern of bot requests. This will help you define them clearly and keep all bot requests at bay.

  • ICMP flood

In this attack, the attackers send an excessively large number of Internet Control Message Protocol or ICMP packets. The most common ones are the ‘ping’ packets. You can disable ping and hide your machine from bots scanning your network.

  • UDP flood

In this attack, the attackers send a large number of User Datagram Protocol or UDP packets to various ports of your server. The main purpose is to saturate the internet pipe. The best protection against these attacks is limiting the number of connections to your DNS server.

  • SYN flood

In this attack, the attackers repeatedly send synchronization packets to each port of your VPS using a fake IP address. Managing these attacks requires you to go through the SYN_RECV state and determine which connection is causing the flood. Once you identify the source, you can block any further connections from it.

Conclusion

Remember, preventing an attack is better than combating it. Ensure that you keep your VPS updated and configure it right. You can also use DDoS protection services for your VPS. Maintaining your VPS Server is a technical process. You can talk to the customer support team of your website hosting provider or opt for Managed VPS services. Stay safe!