NGINX App Protect DoS Release 1.0

Here you can find the release information for NGINX App Protect DoS v1. NGINX App Protect DoS provides behavioral protection against Denial of Service (DoS) for your web applications.

Release 1.0

July 6, 2021

New Features

Protection against application layer Denial of Service attacks

  • GET and POST flood
  • Slowloris, Slowread, Slowpost
  • Distributed variations of attacks (see above)
  • Challenge Collapsar (CC) attack/random URIs

False-positive management mechanisms

  • HTTP Redirection
  • Client-side validation
  • TLS fingerprinting

Use Cases

Application Types

  • Traditional HTML-based web applications
  • XML-based web services

Deployment Options

  • Kubernetes Per-pod proxy
  • Kubernetes Per-service proxy
  • API Gateway
  • Traditional edge proxy

Supported Packages

App Protect DoS

CentOS 7.4+
  • app-protect-dos-24+1.69.6-1.el7.ngx.el7.ngx.x86_64.rpm
Debian 10
  • app-protect-dos_24+1.69.6-1~buster_amd64.deb
Ubuntu 18.04
  • app-protect-dos_24+1.69.6-1~bionic_amd64.deb
Ubuntu 20.04
  • app-protect-dos_24+1.69.6-1~focal_amd64.deb


  • NGINX Plus R24

Known Issues

  • proxy_request_buffering off is not supported.

  • NGINX App Protect DoS does not protect grpc and http2 services. The traffic is bypassed.

  • TLS fingerprint feature is not used in CentOS 7.4 due to the old OpenSSL version. The required OpenSSL version is 1.1.1 or higher.

  • Slow POST attack always mitigates with block action while other types of attacks can also be mitigated with redirection or JS challenges.