Installing GNOME 3 on Ubuntu 11.04 Natty Narwhal

Note that this is an unofficial way to install GNOME 3 on Ubuntu 11.04 (Natty Narwhal), things might be broken, so proceed with caution.

Step 1: Add GNOME 3 PPA repository
sudo apt-add-repository ppa:gnome3-team/gnome3

Then update the apt-get repository database by running:
sudo apt-get update

Step 2: Install the Gnome 3 Desktop environment using this command
sudo apt-get install gnome-desktop3

Note that this might screw up your installation, you’ve been warned.

Keeping Things Private – Stripping JPEG Metadata

There are more things than we know that can be revealed by your JPEG EXIF metadata such as the type of camera you use, aperture settings, the type of focus, lens type and even the location of the picture taken that might compromise the privacy of the persons or locations depicted in the photograph.

Mypapit EXIF data gnome

One of the things that we can do to is to strip away the information from JPEG files before uploading them to the internet, by using exiftool or jhead.

Exiftool
Install libimage-exiftool-perl
sudo apt-get install libimage-exiftool-perl

and by running the command
exiftool -all= *.jpg

jhead
Install jhead package:
sudo apt-get install jhead

and by running the command
jhead -purejpg /path/to/*.jpg

Howto solve ssh_exchange_identification: Connection closed by remote host error

I’ve keep getting the message “ssh_exchange_identification: Connection closed by remote host error” after I managed to finalized my CRUX linux on my decTOP box today. After enough looking into documentations, I finally found out that I need to edit the “/etc/hosts.allow” file to allow SSH connection, for example:


#/etc/hosts.allow
sshd:ALL

or for more conservative setting


#/etc/hosts.allow
sshd:LOCAL
sshd:192.168.1.0/255.255.255.0

I can connect ssh to my box normally after that.

Video: Cracking Wifi WEP Keys using Backtrack 4 and aircrack-ng

Here’s a video showing you how to crack Wireless WEP keys using Backtrack 4 and aircrack-ng.

Additionally, you need a compatible wireless adapter or compatible wireless chipset which can be used with aircrack-ng.

Here are the list of the best wireless cards to use(according to aircrack-ng wiki):

Good luck!