Core Security Technologies offers several security related webcasts on their website. One that I enjoyed was “Pen Testing Ninjitsu”. The series is presented by SANS instructor and security expert Ed Skoudis. The topics are (from website):
Part I: “Windows Command Line Hero”
A brief introduction to the value of penetration testing + an overview of pen testing techniques using the Windows command shell.
Part II: “Crouching Netcat, Hidden Vulnerabilities”
An introduction to techniques for performing the functions of Netcat – such as moving files, scanning ports and creating backdoors – without using Netcat.
Part III: “After the Initial Compromise”
This installment explores what can happen after the initial vulnerability is compromised and a threat becomes truly invasive – and how to proactively assess your systems against such attacks.
Ed’s knowledge is truly amazing, check it out.