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)

How to confirm Nessus vulnerabilities using Nmap and other tools

Most of the vulnerabilities reported by Nessus are signature and value-based, which Nessus makes a decision on based on the code present in the plugins. It is required to confirm these vulnerabilities using manual techniques such as Nmap scripts or port-specific open source tools. This will allow the administration team to put their efforts into the mitigation of the actual vulnerabilities instead of false positives. Also, sometimes, Nessus reports vulnerabilities for which workarounds have already been applied as Nessus only checks with respect to the conditions mentioned in the plugin and cannot recognize any other deviations. In this recipe, we will look at sets to verify multiple vulnerabilities reported by Nessus using Nmap and other open source tools.

In order to create this recipe, we will perform a demo basic...