Tag Archive: Linux


Synergy is a program that will let you use one keyboard and mouse on multiple computers across a network. The computers can be running Linux, Windows, or MacOS. The computer with the keyboard and mouse is the server or host, and the computers with the displays to be controlled remotely are the clients. In this tutorial I will let you know how to get Synergy setup and running on your Ubuntu system.

On the left-hand monitor I have a Windows XP system running. On the right-hand monitor I run Ubuntu. If I move my mouse off my Windows XP monitor to the right, it shows up on the Ubuntu monitor and vice-versa. Plus cut-and-paste works between the machines as well.

Here’s how to configure Synergy with two computers. Let’s assume that you have two home machines called “windowspc” and “ubuntu”. We’ll put the Windows machine on the left and the Ubuntu machine on the right. One of the two machines will run as the Synergy server and the other will run as a Synergy client. I picked the Ubuntu machine to be the server.

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What is The Hacker’s Underground Handbook ?

David : I wrote this book a couple months ago. When I first got into the hacking scene, I was just like any other newbie. I asked stupid questions and thought that there was some easy trick to hacking. Little did I know that 4 years later I would still be learning and loving every minute of it. Anyways, after searching for “how to hack” and not coming up with anything useful and understandable, I was told to go read some books.”

So what did you learn from those books ?

David : Well Frankly speaking, I didn’t understand what I was reading. Only after some independent research on many topics did I start to understand what hacking was and how broad of a topic it really was.

If you run a dual-boot system with Linux and Windows, this has happened to you. You had to do your monthly reinstall of Windows, and now you don’t see the linux bootloader anymore, so you can’t boot into Ubuntu or whatever flavor of linux you prefer.

Steps to re-enable Grub :

Boot off the Linux Live CD

Open a Terminal and type in the following commands, noting that the first command will put you into the grub “prompt”, and the next 3 commands will be executed there. Also note that in hd0,0 implies the first hard drive and the first partition on that drive, which is where you probably installed grub to during installation. If not, then adjust accordingly.

Nmap Hacking Theory

Following are the states that ports are available in

1. Open                                 Closed

2. Filtered                            Unfiltered

3.  Open / filtered               Closed/Unfiltered

Scanning through Nmap gives you list of ports that are opened or filtered. Most of closed ports are not disclosed as there are almost 65000 ports in a computer for communication.

(Filtered packet : It means the data packets that are sent or received are filtered by firewall to secure it.)