Dos Attacks On Apache2 (win2003)

May 5, 2007

Im running a windows 2003 web edition server with apache 2.2.4 installed and a ported module; mod_dosEvasive, my server is vurnable for some sort of single machine dos attack. Not only my own server is vurnable but basically ANY apache 2.2.4 win32 server, even without additional modules (lik php) installed ( i checked by installing apache2 on 4 machines, all vurnable)

The tool used to attack apache is described here:
[url]

When attacked by the specific syn flood attack apache2 becomes useless and doesnt send any responses out anymore. When the attacker stops sending this flood Apache starts responding again.

how to secure a windows apache server against such an attack?

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Code:
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Code:
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Quote:

host:/etc/init.d# apt-get install php4 php4-mysql php4-cli libapache2-mod-php4
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances... Fait
Paquets suggérés :
php-pear php4-pear
Les NOUVEAUX paquets suivants seront installés :
libapache2-mod-php4 php4 php4-cli php4-mysql
0 mis à jour, 4 nouvellement installés, 0 à enlever et 275 non mis à jour.
Il est nécessaire de prendre 0o/3258ko dans les archives.
Après dépaquetage, 6517ko d'espace disque supplémentaires seront utilisés.
Sélection du paquet libapache2-mod-php4 précédemment désélectionné.
(Lecture de la base de données... 35624 fichiers et répertoires déjà installés.)
Dépaquetage de libapache2-mod-php4 (à partir de .../libapache2-mod-php4_6%3a4.4.7-0.dotdeb.0_i386.deb) ...
Sélection du paquet php4 précédemment désélectionné.
Dépaquetage de php4 (à partir de .../php4_6%3a4.4.7-0.dotdeb.0_all.deb) ...
Sélection du paquet php4-cli précédemment désélectionné.
Dépaquetage de php4-cli (à partir de .../php4-cli_6%3a4.4.7-0.dotdeb.0_i386.deb) ...
Sélection du paquet php4-mysql précédemment désélectionné.
Dépaquetage de php4-mysql (à partir de .../php4-mysql_6%3a4.4.7-0.dotdeb.0_i386.deb) ...
Paramétrage de libapache2-mod-php4 (4.4.7-0.dotdeb.0) ...

Paramétrage de php4 (4.4.7-0.dotdeb.0) ...

Paramétrage de php4-cli (4.4.7-0.dotdeb.0) ...

Paramétrage de php4-mysql (4.4.7-0.dotdeb.0) ...

host:/etc/init.d# /etc/init.d/apache2 force-reload
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Quote:

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Quote:

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Quote:

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