This paper gives the valuable information about Pentration Testing. The beginners will surely benfit from it. It discusses the following topics

- An overview of how Vulnerability Assessment (VA) & Penetration is done.
- Defining scope of the assessment.
- Types of Penetration Testing.
- A brief understanding on how Buffer Overflow works.
- How vulnerabilities are scanned and exploited.
- What are the end result.
- What a Penetration Testing Report should contain.
The link to paper