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Author: UltratechHost - Replies: 0 - Views: 4660
How to Detect DoS attacks ?
Here is a command line to run on your server if you think your server is under attack. It prints our a list of open connections to your server and sorts them by amount.

RedHat: netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

BSD: netstat -na |awk '{print $5}' |cut -d "." -f1,2,3,4 |sort |uniq -c |sort -n

You can also check for connections by running the following command.
netstat -plan | grep :80 | awk '{print $4 }' | sort -n | uniq -c | sort

These are few s
Author: UltratechHost - Replies: 0 - Views: 6047
Flood/DoS/DDoS Protection with mod_dosevasive (Avoiding Denial of Service Attacks)
With the widespread infection of many computers with viruses, and the ever increasing number of Botnets, DoS and DDoS attacks can be quite frequent and can very easily bring a website to halt for days. This article provides a module solution for apache to help mitigate small http DoS and DDoS attacks.

Download the latest version of mod_dosevasive from:
Code:
http://www.nuclearelephant.com/projects/dosevasive

The lastest version is 1.10
[code]http://www.nuclearelephant.com/projects
Author: UltratechHost - Replies: 0 - Views: 11374
Protecting Apache with Mod_QOS to Prevent DDOS Attacks of Slowloris
Apache being the dinosaur that it is prone to a host of denial of service attacks. A common form of attack refered to as HTTP flooding (for example Slowloris) exploits Apache’s architecture.

Installing and setting up Mod_QOS

Firstly we will download Mod_QOS:

Code:
cd /tmp
wget http://kent.dl.sourceforge.net/project/mod-qos/mod_qos-9.57.tar.gz
apt-get install apache2-threaded-dev gcc

Untar the archive:

Code:
tar -xvf mod_qos-9.57.tar.gz
cd mod_qos-9.57/apache2

W