Measure the total time of entry and verify the time between keystrokes to help authenticate a user regardless of the data being entered. Learn how to apply the open source tools xev and Perl in keystroke dynamics to measure the more-subtle characteristics of human-computer interaction. This article uses example code to demonstrate keystroke dynamics for enhancing the security of your applications in authentication and continuous data entry contexts.

The code as presented in the article will enable you to efficiently query structured LDAP data quickly by using Perl and a vector-space search engine to search and display records from your Lightweight Directory Access Protocol (LDAP) database, while compensating for typographical and spelling errors automatically.

This tutorial shows how to install and use SpeedyCGI (also known as PersistentPerl) on a Debian Etch system. SpeedyCGI is a way to run Perl scripts persistently, which can make them run much more quickly. It keeps the Perl interpreter running, and during subsequent runs, this interpreter is used to handle new executions instead of starting a new Perl interpreter each time.

http://www.howtoforge.com/speedycgi_debian_etch

Security, speed, compliance, and flexibility--all of these describe LightTPD which is rapidly redefining efficiency of a webserver; as it is designed and optimized for high performance environments.

A chroot on Linux or Unix OS is an operation that changes the root directory. It affects only the current process and its children. If your default Document Root is /home/lighttpd normal user can access files in /etc, /sbin or /bin directory. This allows an attacker to install programs / backdoor via your web server in /tmp. Almost all-cracking web based attacks/attempts requires a shell access - /bin/sh or /bin/bash and compiler collection etc.

Many organizations implement some form of LDAP service for storing enterprise directory information. Existing search options allow for a range of lookups based on where certain data is stored in the directory. This article allows you to combine the power of regular expressions with the grep tool to create your own custom LDAP search capability. In the spirit of successful search engines, such as Google, we'll change the search format from a LDAP-style query string to simple and powerful keyword matching and results display.