Practical Network Scanning: Capture network vulnerabilities using standard tools such as Nmap and Nessus

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Secure Network Design

In the previous chapter you learned about the basic concept of infrastructure security and built a strong foundation for the different areas required to understand the need for information security based on current security threats that exist in cyber space.

The internet has grown dramatically and has reached a stage where everyone must be connected in order to exchange information. Imagine that billions of people with internet enabled devices are directly connected to the internet, and some sort of unsecured network becomes a target for cyber criminals.

In this chapter, we describe how to secure a network and look at the significance of network security. In a layered fashion, we will also discuss methods and approaches to building a secure network based on business aims.

The following topics will be covered in this chapter:

Access control
Network management...

Key benefits

Learn to choose the best network scanning toolset for your system

Implement different concepts of network scanning such as port scanning and OS detection

Adapt a practical approach to securing your network

Description

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.

What you will learn

Achieve an effective security posture to design security architectures

Learn vital security aspects before moving to the Cloud

Launch secure applications with Web Application Security and SQL Injection

Explore the basics of threat detection/response/ mitigation with important use cases

Learn all about integration principles for PKI and tips to secure it

Design a WAN infrastructure and ensure security over a public WAN

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