Keep SSH Session Alive After Disconnecting
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 get the old [...]
Y U No Try Google Drive (Google Docs)
Most people don’t realize how much it’s important to keep a backup of their important files, photos, documents,etc… until they loose it by system crashes or data corruptions. You don’t need to worry about this anymore. Now you can keep those stuff synced in the cloud. Even if your local machine got into fire [...]
Forgot to sign out of my Gmail account
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 session from outside. [...]
How Address Resolution Protocol (ARP) Works
Followed by azker‘s article on OSI model Part-1 and Part-2. In this article I will explain what this ARP and why it’s important to know about it. In OSI Layers you see there are two types of addresses in OSI model. Network layer contains IP address and Datalink layer contains MAC address. When I was learning OSI Layers this [...]
Make your Home Server using Dynamic DNS
The purpose of this article is to explain about Dynamic DNS and it’s usage. I’ll walk through by setting up Dynamic DNS system for your server. What is Dynamic DNS and how it works In short it’s the replacement for the requirement of static IP. First you need to understand how DNS works, check out this [...]
How to Setup Zimbra Open Source Mail Server on Ubuntu 10.04
Discuss more about posts, topics & issues at our GeekLK Help Zimbra, an open source mail server is not just to send and receive emails but it’s a fully featured collaboration suite which includes calendar, tasks, file-sharing, IM, mobile support and many more… Now, I wanted to deploy an email server on my work [...]
Control your Android device from a Web browser with Airdroid
Airdroid is an awesome application where you can control your android device within a web browser simply. With airdroid you can take over most functions of the device but not only file sharing; you can also manage applications, read/write SMS and many more… I will give you simple guide on how you can utilize this application [...]
Change default search engine to google.com in Chrome
Omnibar is a cool feature in Chrome browser, you can instantly search for anything from the omnibar (address bar) and result will appear below it. So the results we get limited to the region Eg: as I’m in Sri Lanka, searches will categorized as we search in google.lk. For some reason I want search result to be in google.com (Global [...]
Session Hijacking made easy – Android
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 [...]
Secure your Gmail access with 2-step verification
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 step-by-step. And [...]