Knowledge Base | Security

HTTP Request Flood Mitigation

HTTP Request Flood Mitigation

In a recent article, we saw how we can use a load-balancer as a first row of defense against DDOS. The purpose of the present article to provide a configuration to protect your applications against HTTP request flood. The configuration below allows only 10 requests...

Web Traffic Limitation

Web Traffic Limitation

Synopsis For different reason, we may want to limit the number of connections or the number of requests we allow to a web farm. In example: give more capacity to authenticated users compared to anonymous one limit web farm users per virtualhost protect your website...

Fight Spam with Early Talking Detection

Fight Spam with Early Talking Detection

Synopsis A good way to improve efficiency against spammers is to use early talking detection: you own a SMTP relay platform and you want to improve its efficiency on spam fighting your current MTA has no early talking detection feature and you want to be able to add...

Protect Apache Against “Apache Killer” Script

Protect Apache Against “Apache Killer” Script

What is Apache killer? Apache killer is a script which aims to exploit an Apache Vulnerability. Basically, it makes Apache to fill up the /tmp directory which makes the webserver unstable. Who is concerned? Anybody running a website on Apache. The Apache announce How...

Protect your Web Server Against Slowloris

Protect your Web Server Against Slowloris

Slowloris??? Slowloris is a script which opens TCP connections and send HTTP headers very slowly to force webservers to keep connections opened. Slowloris purpose is to take all resources from one server for him, preventing any regular browser from using the service....

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