From the category archives:

Security

My New Book on Squid Proxy Server (A Beginner’s Guide)

April 18, 2011

I have not blogged since a long time mainly because I was a bit busy authoring a book Squid Proxy Server 3.1: Beginner’s Guide for Packt Publications. The book is an introductory guide to Squid (especially the new features in Squid-3 series) covering both the basic aspects as well as the in dept details for [...]

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Crack: Google Authentication Services are Vulnerable

December 5, 2008

There is a vulnerability in the way Google authentication service works. Whenever you login to any of the Google’s online services like GMail, Orkut, Groups, Docs, Youtube, Calendar etc., you are redirected to an authentication server which authenticates against the entered username and password and redirect back to the required service (GMail, Youtube etc.) setting [...]

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How To: Write Custom Basic Authentication Plugin for Squid in Python

April 24, 2008

Mission To write a Python program which can be used to authenticate for Squid proxy server. This is useful when you don’t want to configure complex systems like LDAP, ntlm etc. Use Cases When you want to authenticate clients using mysql database. When you want to authenticate clients using flat files or /etc/passwd file or [...]

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How To: Configure Secure FTP Server (VSFTPD)

September 8, 2007

This post is totally dedicated to vsftpd configuration with uploads enabled. vsftpd stands for Very Secure FTP Daemon. It is shipped with almost all the latest Red Hat based OS. vsftpd for rpm based Linux distros can be downloaded from here. Also, one can install vsftpd by issuing ‘yum install vsftpd’ or ‘apt-get install vsftpd’ [...]

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How To: Recover/Crack Root Password when Grub is Locked

December 4, 2005

The only essential thing is that you should have a Linux boot CD of the same operating system for which you want to crack root password. Some other Linux boot CD may work in some cases. If system is able to boot from the CD, it will take you to a command prompt as shown. [...]

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