How do you protect against slow HTTP attacks Nginx?

How do you protect against slow HTTP attacks Nginx?

To protect your Web server against slow HTTP attacks, I recommend the following:

1. Reject / drop connections with HTTP methods (verbs) not supported by the URL.
2. Limit the header and message body to a minimal reasonable length.
3. Set an absolute connection timeout, if possible.

Can Nginx prevent DDoS attack?

Nginx, a highly popular server system for Unix machines, comes with enough built-in functionality to greatly limit the effectiveness of DDoS attacks. These features could handle a DDoS attack by regulating the incoming traffic and by controlling the traffic as it is proxied to backend services.

How many connections Nginx can handle?

How many connections can NGINX handle? Each NGINX worker can handle a maximum of 512 concurrent connections. In newer versions, NGINX supports up to 1024 concurrent connections, by default. However, most systems can handle more.

Is Nginx a firewall?

The NGINX ModSecurity Web Application Firewall (WAF) protects applications against sophisticated Layer 7 attacks that might otherwise lead to systems being taken over by attackers, loss of sensitive data, and downtime. The NGINX ModSecurity WAF is based on the widely used ModSecurity open source software.

What is slow read attack?

A slow read DDoS attack involves an attacker sending an appropriate HTTP request to a server, but then reading the response at a very slow speed, if at all. By reading the response slowly – sometimes as slow as one byte at a time – the attacker prevents the server from incurring an idle connection timeout.

Why is there a Slow DoS attack on nginx?

A Slow HTTP DoS Attack takes advantage of a vulnerability in thread-based web servers which wait for entire HTTP headers to be received before releasing the connection.

Can a Slow DoS attack work on Apache?

The HTTP request will seem legitimate to the IDS. Slow HTTP DoS attacks are only effective against thread-based web servers such as Apache, dhttpd, or Microsoft IIS. They are not effective against event-based web servers such as nginx and lighttpd, which are built to handle large numbers of concurrent connections.

How can Nginx be used for DDoS mitigation?

NGINX and NGINX Plus can be used as a valuable part of a DDoS mitigation solution, and NGINX Plus provides additional features for protecting against DDoS attacks and helping to identify when they are occurring.

How to stop http denial of service ( DoS ) attacks?

In the Apache web server, a number of modules can be used to limit the damage caused by the Slowloris attack; the Apache modules mod_limitipconn, mod_qos, mod_evasive, mod security, mod_noloris, and mod_antiloris have all been suggested as means of reducing the likelihood of a successful Slowloris attack.