Lakshmanan Ganapathy

How to Write Linux Init Scripts Based on LSB Init Standard

by Lakshmanan Ganapathy on March 16, 2012

LSB stands for Linux Standard Base. LSB was started by Linux Foundation to reduce the difference between several Linux distributions, and thereby reducing the cost involved in porting between different distributions. Init scripts are one among them to be standardized. In this article, we will see how to write an Init script that conforms to [...]

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Reverse Engineering Tools in Linux – strings, nm, ltrace, strace, LD_PRELOAD

by Lakshmanan Ganapathy on March 7, 2012

This article explains about the tools and commands that can be used to reverse engineer an executable in a Linux environment. Reverse engineering is the act of figuring out what a software does, to which there is no source code available. Reverse engineering may not give you the exact details of the software. But you [...]

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XSS Attack Examples (Cross-Site Scripting Attacks)

by Lakshmanan Ganapathy on February 16, 2012

In the previous article of this series, we explained how to prevent from SQL-Injection attacks. In this article we will see a different kind of attack called XXS attacks. XSS stands for Cross Site Scripting. XSS is very similar to SQL-Injection. In SQL-Injection we exploited the vulnerability by injecting SQL Queries as user inputs. In [...]

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How to Prevent SQL Injection Attack (Explained with an Example)

by Lakshmanan Ganapathy on February 7, 2012

This article explains basics of SQL Injection with an example that shows SQL Injection, and provides methods to prevent from these attacks. As the name suggests, this attack can be done with SQL queries. Many web developers are unaware of how an attacker can tamper with the SQL queries. SQL-Injection can be done on a web application [...]

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How to Install Oracle VM VirtualBox and Create a Virtual Machine

by Lakshmanan Ganapathy on February 3, 2012

Oracle VM VirtualBox is an open source virtualization software that you can install on various x86 systems. You can install Oracle VM Virtualbox on top of Windows, Linux, Mac, or Solaris. Once you install the virtualbox, you can create virtual machines that can be used to run guest operating systems like Windows, Linux, Solaris, etc. [...]

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How to Setup Rsyslog Remote Logging on Linux (Central Log Server)

by Lakshmanan Ganapathy on January 25, 2012

Every Linux distribution have some kind of logging mechanism that records all the system activities. A while back we provided a list of 20 log files that are stored under /var/log that you might be helpful during troubleshooting. These logs are very critical for sysadmin for troubleshooting purpose. The following are the three common methods to log [...]

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