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pfSense – configuring Windows Active directory authentication

March 3, 2014

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pfsense-icon-geeklk

pfSense, one of the most powerful open-source firewall router (software based) which is completely based on FreeBSD OS family. Now you may assume, that you will need to know about terminal commands to control and manage this. Well, part of it is true as you will need to know about commands for any advancing purpose […]

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Installing OpenVPN with Shorewall in Ubuntu – Part 2

September 16, 2013

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OpenVPN

If you haven’t go through the OpenVPN installation part, you can check in Part 1. Now we have a client connected to the server with IP address 10.8.0.17. First we need to tell server to route incoming packets destined to internet through server’s public IP. Which we call NAT. I’m using Shorewall to do the […]

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Installing OpenVPN Server with Shorewall in Ubuntu – Part 1

August 16, 2013

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OpenVPN

Hello everyone. I couldn’t post anything recently as I got stuck with some projects. Today I’ll be covering OpenVPN installation with Shorewall in Ubuntu 12.04. This is something new I tried and it worked for me :D. On the first part I’ll go through the basic installation and getting a user connected to the server. […]

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IPFire the Successor to IPCop

May 30, 2013

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IPFire

Being a fan of IPCop when I was trying to download it and just for my curiosity typed IPCop vs in Google search and found something interesting, an another firewall distro called IPFire. After doing some reading I found that it’s the completed version of current IPCop which includes all the features that are inbuilt into […]

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Keep SSH Session Alive After Disconnecting

July 1, 2012

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ssh-logo-geeklk

When I use SSH to remotely manage my Ubuntu servers specifically when installing applications and editing config files sometimes I get disconnected due to internet connectivity issues. Most of the time I use Hamachi VPN to connect to the servers. If it get disconnected in middle of setting up something, there is no way to […]

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Forgot to sign out of my Gmail account

May 19, 2012

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Gmail logo

Discuss more about posts, topics & issues at our GeekLK Help It happened to me once. I walked out from one of my clients site and then I just realized that I forgot to sign out from my Google drive. All Google services works with single sign in :). So I could sign out all currently logged in […]

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Use the Internet wisely & Stay safe from DNS Changer malware

May 11, 2012

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malware

Hello Folks, Once again, I’m back with another piece of information which is useful for the users. Almost all the internet audience will be targeted on this since it’s a privacy & protecting your self over the internet. Okay!! Today’s topic is about the famous malware which is spreading over the net anonymously these days & injecting users computer […]

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Session Hijacking made easy – Android

December 31, 2011

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FaceNiff

Session Hijacking also known as a Sidejacking, is an attack stealing someones web session to gain unauthorized access. What is a web (HTTP) session Each & every time a user log into Facebook, Twitter or your banking account… etc, the web server will give the user a session ID or a token while the web browser stores […]

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Secure your Gmail access with 2-step verification

December 9, 2011

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Gmail logo

Google now has a security feature called 2-step verification which provides a secure way of login to your Gmail account. This would probably help when you you’re using a public PC or your friend’s PC. Who knows he/she has a key logger inside the PC ;). In this tutorial I’ll explain how to configure it […]

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OpenSecret: Encrypt and Decrypt a Message

December 7, 2011

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It’s In fact concerns over the privacy in the Internet has been questioned frequently in the world arena. The emergence of Anonymous and Lulzsec as a world celebrated hacking groups, the phone hacking scandal staged by the media guru Rupert Murdoch and Recently Facebook had been under some attacks,  With the increasing concern over the these privacy allegations,  There […]

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