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Imagine a restaurant with thousands of people trying to enter at once. Staff cannot serve them all. A website can face a similar problem when too much traffic reaches its servers.
A DDoS attack, or Distributed Denial of Service attack, floods a service with traffic or requests. It can slow a website or take it offline. Customers may lose access to information or key services.
Attackers can launch these attacks for many reasons. Finding their source can be hard. Plesk's materials discuss ways to protect the servers that host your business.
What is DDoS protection?
DDoS attacks take several forms. Some fill the network connection. Others target network protocols or the application itself. Protection needs to match the type of attack.
A filtering layer checks traffic and blocks harmful requests. This helps keep server and network resources free for real users.
Common attack types include:
- UDP floods
- SYN and SYN-ACK floods
- ICMP floods
- DNS reflection floods
- Fake sessions
- Traffic with spoofed IP addresses
- Application-layer attacks
These attacks can disrupt work and cause financial loss. Check which threats your infrastructure and protection service cover.
Detecting and analysing attacks
An attack may be hard to spot at first. Delays can make the damage worse. A suitable protection system can detect harmful traffic and act quickly.
Some tools also analyse the attack. Their reports help teams prepare for similar incidents.
Continuous filtering can identify an attack soon after it starts. Fast detection and response help keep services available.
Without suitable protection, a server may stay offline for a long time. Businesses of all sizes should plan for this risk.
Server-side protection
New attack methods keep appearing. Security providers use traffic data to improve their detection tools and defences.
Small and new firms are targets too. They may have fewer resources to recover from an outage. DDoS planning matters even before a business becomes large.
A smaller bot attack can make a site slow without taking it offline. Slow pages frustrate visitors and can cost sales.
Before choosing a provider, check the scale and types of protection included. Hosting plans can offer different levels of defence.
DDoS protection in a Plesk environment
Plesk helps admins manage servers. Monitoring and automation can make hosting tasks easier when combined with suitable network security tools.
Third-party protection tools may work with Plesk. Check that any extension or vendor is still supported. It must also fit your network setup.
How traffic filtering works
- Incoming traffic passes through a filter.
- The filter checks requests for signs of automated or harmful traffic.
- It reviews IP addresses, connection patterns and behaviour.
- Bot protection blocks requests identified as harmful.
- The system aims to let real users keep using the website.
