Home arrow Security arrow Page 3 - Network Security Assessment

Assessment Service Definitions - Security

If you want to run a business with a website, security must be high on your list of important matters to get right up front. In this article, you will learn about Internet-based network security assessment and penetration testing, which can help you determine your website's risk of being successfully attacked -- and what to do to fix any problems. It is taken from chapter one of the book Network Security Assessment by Chris McNab (O'Reilly, 2004; ISBN: 059600611X).

TABLE OF CONTENTS:
  1. Network Security Assessment
  2. IP: The Foundation of the Internet
  3. Assessment Service Definitions
  4. Internet Host and Network Enumeration
  5. Investigation of Vulnerabilities
  6. The Cyclic Assessment Approach
By: O'Reilly Media
Rating: starstarstarstarstar / 12
May 19, 2005

print this article
SEARCH DEV SHED

TOOLS YOU CAN USE

advertisement

Most security providers (both service and product companies) offer a number of assessment services branded in a variety of ways. Figure 1-1 shows the key service offerings along with the depth of assessment and relative cost. Each service type can provide varying degrees of security assurance.

Vulnerability scanning uses automated systems (such as ISS Internet Scanner, Qualys-Guard, or eEye Retina) with minimal hands-on qualification and assessment of vulnerabilities. This is an inexpensive way to ensure that no obvious vulnerabilities exist, but it doesn’t provide a clear strategy to improve security.


Figure 1-1.  Different security testing services 

Network security assessment lies neatly between vulnerability assessment and full-blown penetration testing; it offers an effective blend of tools and hands-on vulnerability testing and qualification by trained analysts. The report is usually hand-written, giving professional advice that can improve a company’s security.

Full-blown penetration testing is outside the scope of this book; it involves multiple attack vectors (e.g., telephone war dialing, social engineering, wireless testing, etc.) to compromise the target environment. Instead this book fully demonstrates and discusses the methodologies adopted by determined Internet-based attackers to compromise IP networks remotely, which in turn will allow you to improve IP network security.

Network Security Assessment Methodology

The best practice assessment methodology used by determined attackers and network security consultants involves four distinct high-level components:

  • Network enumeration to identify IP networks and hosts of interest

  • Bulk network scanning and probing to identify potentially vulnerable hosts

  • Investigation of vulnerabilities and further network probing by hand

  • Exploitation of vulnerabilities and circumvention of security mechanisms

This complete methodology is relevant to Internet-based networks being tested in a blind fashion with limited target information (such as a single DNS domain name). If a consultant is enlisted to assess a specific block of IP space, he skips initial network enumeration and commences bulk network scanning and investigation of vulnerabilities.



 
 
>>> More Security Articles          >>> More By O'Reilly Media
 

blog comments powered by Disqus
escort Bursa Bursa escort Antalya eskort
   

SECURITY ARTICLES

- Secure Your Business for Data Privacy Day
- Google Testing Security Fob Password Alterna...
- Security News Highlights Concerns
- Going to Extremes for Data Security
- Skipfish Website Vulnerability Scanner
- Critical Microsoft Visual Studio Security Pa...
- US Faces Tech Security Expert Deficit
- LAN Reconnaissance
- An Epilogue to Cryptography
- A Sequel to Cryptography
- An Introduction to Cryptography
- Security Overview
- Network Security Assessment
- Firewalls
- What’s behind the curtain? Part II

Developer Shed Affiliates

 


Dev Shed Tutorial Topics: