DDoSellenállást

DDoSellenállás refers to the ability of a system, network, or service to withstand and continue operating during a Distributed Denial of Service (DDoS) attack. A DDoS attack aims to overwhelm a target with a flood of malicious traffic from multiple compromised sources, making it unavailable to legitimate users. Effective DDoSellenállás involves a combination of proactive measures and reactive strategies to mitigate the impact of such attacks.

Proactive measures include network infrastructure hardening, such as implementing firewalls and intrusion prevention systems, and utilizing robust network architectures that can absorb or distribute traffic. Content Delivery Networks (CDNs) can also play a role by distributing content across multiple servers, making it harder for an attack to bring down the entire service. Traffic filtering and rate limiting are essential to distinguish between legitimate and malicious traffic. Employing access control lists and blacklisting known malicious IP addresses are common techniques.

Reactive strategies involve monitoring network traffic for anomalies and signs of an attack. Upon detection, mechanisms for automatically diverting or scrubbing malicious traffic are activated. This often involves specialized DDoS mitigation services that can analyze incoming traffic, identify attack patterns, and filter out the malicious packets before they reach the target system. These services may use techniques like IP spoofing detection, protocol anomaly detection, and behavioral analysis. The goal is to restore normal service operation as quickly as possible while minimizing data loss and disruption. Building resilience into the system's design and having a well-defined incident response plan are crucial components of achieving effective DDoSellenállás.