Hi Friends This An fantastic way of Server hacking Using Backtrack Like i told you previously i will be posting some nice article on Hacking Using Backtrack This One of the Nice way of server hacking.
ok lets proceed to main part.

This attack is commonly used against remote Linux servers on which SSH service is enabled.

Hydra is a password cracking tool available in Backtrack.
Let the IP address of the server be
So start an nmap scan. For that open terminal and issue the following command:

nmap –p 22

After the scan is completed, it will show you whether SSH service is enabled at port 22. You can only proceed if the nmap scan shows the result similar to that in the above image.
Now open hydra GUI which is located at BackTrack -> Privilege Escalation -> Password Attacks -> Online Attacks -> hydra-gtk

On the target tab specify the details as follows:

Single Target:

Port: 22

Protocol: ssh

Show Attempts: checked

Be Verbose: checked

On the Password tab specify the details as follows:

Username: root //we are assuming that the username is root.

Password List: Select a password list.

On the Tuning tab specify the details as follows:

Number of Tasks: 10

Timeout: 29

Now click on the Start tab and select Start and wait for Hydra to crack the password. The password will be cracked if its there in the password list.

Now after you got the password go to terminal and issue the following command:


root@’s password:

it will ask for the password give the password and you are in the remote system.

Video Demonstration

(Done By KCF)
This Tutorial is for Educational Purpose Only:

Securing/Protection Against Attack

* Configure SSH in Filtered state.
* Setup a strong password.
* Change the Default Password and User Name.
* Configure the iptables rule to defend against Dictionary attack.
* Make Updates Regularly .
Hope You like this tutorial You can Also Check
Click On This Link To Get More Backtrack Tutorial Starting from Beginner Level :).
Keep Visiting Keep Learning .

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