Book Image

Network Scanning Cookbook

By : Sairam Jetty
Book Image

Network Scanning Cookbook

By: Sairam Jetty

Overview of this book

Network scanning is a discipline of network security that identifies active hosts on networks and determining whether there are any vulnerabilities that could be exploited. Nessus and Nmap are among the top tools that enable you to scan your network for vulnerabilities and open ports, which can be used as back doors into a network. Network Scanning Cookbook contains recipes for configuring these tools in your infrastructure that get you started with scanning ports, services, and devices in your network. As you progress through the chapters, you will learn how to carry out various key scanning tasks, such as firewall detection, OS detection, and access management, and will look at problems related to vulnerability scanning and exploitation in the network. The book also contains recipes for assessing remote services and the security risks that they bring to a network infrastructure. By the end of the book, you will be familiar with industry-grade tools for network scanning, and techniques for vulnerability scanning and network protection.
Table of Contents (10 chapters)

Introducing Nessus and Nmap

In this section, we will learn about the various features available in Nmap and Nessus. This helps the user to fully understand the tools and their capabilities before using them.

Useful features of Nessus

The default screen on the Nessus web interface, Scans, is shown in the following screenshot; this is where you can see all the scans that you have scheduled/performed. In the top right, you can toggle between the Scans and Settings pages. Next, we will look into the scans interface:

The left pane of the Nessus default screen displays multiple tabs classified into folders and resources. The folders are basically different views of scans present on the server. For example, selecting the Trash...