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

Server antivirus and malware protection


Understanding the difference between malware, spyware, trojans, ransomware, scareware, and viruses is very important. For example, a computer virus is the most famous type of malware. Malware is short for malicious software or code and is used as a single term to refer to a virus, spyware, worm, and so on, written to disrupt, exploit, steal data, or disable computers over networks. It is important that all users know how to recognize and protect themselves from malware in all of its forms. By nature, computer viruses and worms spread by making copies of themselves. Most of us feel that a firewall does protect us from malware, but, in reality, normal stateful (we will discuss how stateful firewalls work in detail in the Chapter 10Firewall Placement and Detection Techniques) firewalls don't protect against malicious content on websites, but anti-malware protects servers and workstations. I would like to clarify here that next-generation firewalls come...