Book Image

Practical Network Scanning

By : Ajay Singh Chauhan
Book Image

Practical Network Scanning

By: Ajay Singh Chauhan

Overview of this book

Network scanning is the process of assessing a network to identify an active host network; same methods can be used by an attacker or network administrator for security assessment. This procedure plays a vital role in risk assessment programs or while preparing a security plan for your organization. Practical Network Scanning starts with the concept of network scanning and how organizations can benefit from it. Then, going forward, we delve into the different scanning steps, such as service detection, firewall detection, TCP/IP port detection, and OS detection. We also implement these concepts using a few of the most prominent tools on the market, such as Nessus and Nmap. In the concluding chapters, we prepare a complete vulnerability assessment plan for your organization. By the end of this book, you will have hands-on experience in performing network scanning using different tools and in choosing the best tools for your system.
Table of Contents (19 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

Summary 


This chapter provides a very detailed overview of VPNs, with a focus on using IPSec as a VPN technology. It started by covering the various use cases for VPN and available options. It then covered the technicalities of different VPN protocols, such as PPTP, L2TP, SSTP, IPsec, and the components that make up IPSec.

The middle section of this chapter covered the design principle of corporate remote access VPNs by looking at full and split tunnel options and their benefits. The chapter finished by looking at WAN encryption techniques, from Enterprise to cloud services and financial organizations, in order to ensure security on different layers of the data communication model.

Now that you have a basic knowledge of all layers from network to application security, the next chapter will look at an overall approach to infrastructure security and future technology.