Archive

Posts Tagged ‘Linux’

Using iptables to reject w00tw00t.at.ISC.SANS.DFind scanners

June 10th, 2010 3 comments

Hello people,

I found recently in my apache log thousands of “w00tw00t.at.ISC.SANS.DFind” requests coming from all parts of the world.

I’ve been searching for solutions to remove their hits because they consume resources on my servers and they doesn’t help when computing my visitors stats…

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Categories: Apache, Linux, Security Tags: , , ,

Tuning your MySQL server for free

June 3rd, 2010 No comments

Greeting all,

I had to tune my personal MySQL server recently, and I found a nice tool which helps and advise you for free on the basic way to do it…

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Categories: Debian, MySQL, Performance Tags: , ,

Setting up a permanent SSH tunnel between 2 servers

May 20th, 2010 4 comments

Greeting everyone,

Today, I’ll show you how to setup an easy and permanent SSH tunnel that auto reconnect in case of failure between two linux servers.

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Categories: Linux, Security Tags: ,

How to secure your webserver against SYN flooding and DoS attack

April 24th, 2010 7 comments

Hello,

It has become popular nowdays to receive incoming attack from foreign server, with the only goal to discard all access / connections to your server. Those attack are generally call “DoS” or “Denial of Service” attack.

Today, I’ll give you a few tricks to reduce impact of such impact on your linux server. Keep in mind that there are no solutions to discard those types of attack, and the tricks I give you today only reduce impact it can have on your server…

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Using iptables to secure your webserver

April 22nd, 2010 1 comment

Greeting everyone,

Today, I’ll show you how you can protect your Linux web server freely and easily using iptables (linux software firewall)

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Categories: Linux, Security Tags: , , ,

Rewriting your URLs using .htaccess

April 18th, 2010 6 comments

Hi,

Today, I’ll talk quickly about .htacess file, and how you can use it to rewrite your URL.

For example, when someone call linux.edu, they will be automatically redirected on www.linux.edu. This could improve your position on various search engine, like Google (SEO).

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Categories: Apache, Web Tags: , , ,

Testing your knowledge on linux using Red Hat Training Pre-assessment Questionnaires

April 12th, 2010 No comments

Greeting everyone,

As you all seem concern about Linux, this is a little exercise that I made yesterday, because I was wondering if I could pass my RHCE exams (which cost at least 2600 euros for a week).

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Categories: Linux, Redhat, RHCE, Training Tags: , , ,