Owasp Http Post Dos Apache Webserver Attack

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Owasp Http Post Dos Apache Webserver Attack

Description: This Tutorials shows, how you can easily take out an Apache Webserver with one HTTP POST Tool using a std. slow DSL Connection.

This is NO Slowloris Attack!

Limitations of HTTP GET DDOS attack:

- Does not work on IIS web servers or web

servers with timeout limits for HTTP headers.

- Easily defensible using popular load balancers,

such as F5 and Cisco, reverse proxies and

certain Apache modules, such as mod_antiloris.

- Anti-DDOS systems may use "delayed

binding"/"TCP Splicing" to defend against HTTP

GET attacks.

Why HTTP POST DDOS attack works

- This attack can evade Layer 4 detection

techniques as there is no malformed TCP, just

like Slowloris.

- Unlike Slowloris, there is no delay in sending

HTTP Header, hence nullifying IIS built-in

defense, making IIS vulnerable too.

- Size, character sets and time intervals can be

randomised to foil any recognition of Layer 7

traffic patterns by DDOS protection systems.

- Difficult to differentiate from legit connections

which are slow

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