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What is SSH Tunneling and port forwarding, Explained with Steps involved

Introduction: What is tunneling? In networking tunneling refers passing network traffic from source to destination via some intermediate. The intermediate may be a server or a network router which acts as gateway between source and destination. Way of interaction between gateway and destination server depends on the type of actual communication. Tunneling decides how the […]

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How to change default bash editor from vim to nano -Linux, CentOS

Introduction This short tutorial will demonstrate how to change default command line (bash) editor in Linux and Unix type operating system. Most of the Linux distribution comes with vim or vi as default bash editor. Both are powerful editor, but I don’t like their interface. Here I’m going to demonstrate changing bash editor from vim to nano in CentOS […]

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How to check virtualization technique of your VPS using virt-what

Introduction Quality and price of a VPS (Virtual Private Server) depends on it’s virtualization technology. Like XEN, VM Wire, KVM provides true virtualization and costly. On the other-hand now a days low end OpenVZ VPS are very cheap.  This has severe performance impact. Unlike KVM, XEN etc. OpenVZ use container based virtualization and share same kernel installed […]

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How to Synchronize IIT Bombay gpo with Gmail

This post is to demonstrate how to synchronize IIT Bombay internal email with Gmail ID. IIT Bombay provide basic email facility over 3 web-mail interface namely Squirrel-mail, Horde and Iloha mail which are accessible using “gpo.iitb.ac.in“, “imp.iitb.ac.in” and “iloha.iitb.ac.in” respectively. All this web-mail provide complete solution for basic email with 1 or 2GB storage but lacks […]

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