mod_anti_tamper – Anti Tamper Module for Apache 2.x


What Is Mod AntiTamper (AT)

AntiTamper is an Apache 2.x module that could be used to prevent some sort of url and cookie tampering.

Specifically, AT could stop a lot of those malicious bots that take advantage from search engines. Moreover, attack techniques like HTTP Response Splitting and session hijacking/fixation will be mitigated.

Is important to notice that mod_anti_tamper is not an alternative to mod_security, which is more exaustive and useful for all web situations. AT could be a complement to mod_security.

Introduction

– What is HMAC

HMAC is a validation algorithm to check the integrity of informations coupled with a secret password (more here).

AT will automatically generate a password and will save it in a ‘safe’ place (root owner with 600 mode).

How AT Works

AT is composed by two primary active components.

1. A filter for url links integrity check.
2. A filter for cookie integrity check.

Download mod_anti_tamper here:

mod_anti_tamper_0.1-alpha.tgz

Or read more here.

Posted in: Countermeasures, Security Software, Web Hacking

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3 Responses to mod_anti_tamper – Anti Tamper Module for Apache 2.x

  1. goodpeople January 26, 2008 at 12:59 am #

    Sorry that I didn’t comment on this one earlier. I’m kinda busy these days..

    This is a very usefull feature. I will definately introduce this in my own webserver.

  2. Fran January 29, 2008 at 4:59 pm #

    2005!! it’s obsolete!

  3. eM3rC February 7, 2008 at 5:49 am #

    All servers deserve this although Fran brings up a good point of it being kind of dated…