#BLOCK SLOWLORIS ATTACK SOFTWARE#

A shotgun approach will be to request random URLs, whereas more sophisticated attackers will profile your site first, looking for slow and uncached resources that are more vulnerable. These attacks can come in a few different forms, but the most commonly seen pattern consists of attackers requesting one or more of your website’s URLs with the highest frequency they are able to achieve. This accessibility makes it especially important that you have defenses in place to repel these assaults.

They don’t require a large botnet and tools for orchestrating the attack are plentiful. The danger of HTTP flood attacks is that they can be carried out by just about anyone. An HTTP flood operates at the application layer and entails being immersed with web requests, wherein the attacker hopes to overwhelm your application’s capacity to respond. In particular, we’ll discuss HTTP floods. In this blog post, we’ll demonstrate how the HAProxy load balancer protects you from application-layer DDoS attacks that could, otherwise, render your web application dead in the water, unreachable by ordinary users.

#BLOCK SLOWLORIS ATTACK SOFTWARE#

Furthermore, chose HAProxy as a core component in its edge infrastructure for its superior performance after comparing it with other software load balancers on the market. Top websites include GitHub, which uses HAProxy to protect its network from application-layer DDoS attacks, and StackExchange, which uses it to detect and protect against bot threats. The spectrum of companies benefiting from HAProxy’s advanced security capabilities range from small mom-and-pop shops to large enterprises, managed hosting companies and load balancer-as-a-service platforms serving millions of requests per second. Even with all these added capabilities, it maintains the best-in-class performance that it’s known for. These building blocks include high-performance ACLs and maps, real-time tracking with stick tables, a performant SSL/TLS stack, WAF and much more. Over the years, HAProxy has evolved to living life in these perilous waters through the development of flexible building blocks that can be combined to mitigate nearly any type of threat. Your website is a boat that must constantly weather the storm of various threats, including distributed denial-of-service (DDoS) attacks, malicious bots, and intrusion attempts. Put any website or application up these days and you’re guaranteed to be the target of a wide variety of probes and attacks.

This post describes techniques that utilize ACLs, maps, and stick tables. See the following posts for introductions to those topics: Application-layer DDoS attacks are aimed at overwhelming an application with requests or connections, and in this post we will show you how an HAProxy load balancer can protect you from this threat.

HAProxy’s high-performance security capabilities are utilized as a key line of defense by many of the world’s top enterprises.

Block slowloris attack