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What is a Public IP address Public IP Addresses (also known as Static IP Addresses) are IP addresses that are visible to the public.Because these ip addresses are public, they allow other people to know about and access your computer, like a Web server.In some cases, you do not want people to access your computer [...]

In one of my previous post about setting up Zimbra mail server application, I’ve mentioned about configuring a Split DNS (local DNS) server using bind9 on server itself. In this article I’ll explain why is it important to a mail server and how it works. Before we go into detail, you should have a good [...]

Recently I’ve installed zimbra 8.0 on one of my client’s server, but I couldn’t use existing wiki instructions to relay outbound mails through no-ip. After few searches, found the solution in zimbra forums. In brief we have to use zmlocalconfig instead of postconf. Follow the instructions below to enable outgoing smtp authentication in zimbra 8.0 [...]

When last time I replaced the network card on my Ubuntu server and I couldn’t get the network to work.  Then I found ‘eth1‘ instead of ‘eth0‘ in ‘ifconfig’. But configuration was set to ‘eth0′ in ‘/etc/network/interfaces‘ file. So the solution is to rename ‘eth1′ back to ‘eth0′ as follows. In Ubuntu edit the following file. [...]

Much awaited version of SmartStart CD is released by HP. The new SmartStart CD 8.7 is released!!. SmartStart 8.7 supports latest version of Windows Server OS and is much needed for customer who wish to implement SBS 2011 on their servers.

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 [...]

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 article. [...]

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 place and went [...]

Nowadays everyone has wireless smartphones tablets etc. Sharing the internet from a wireless enabled PC or lap in windows is not easy for non techy people. In this tutorial I will demonstrate on how to setup and easily share your existing internet connection to all other wireless devices instantly. Connectify me hotspot application. Connectify me is [...]

Mobile, Cloud, Social and Data Analytic Technologies are Expected to be the big movers in 2012, says a December 2011 article from iTWire. Virtualization and security were already buzzwords in 2011, but new in 2012 is the emphasis on enterprise social collaboration and business analytics Technology.