In this chapter, we went over how to use Nmap and Wireshark to monitor network traffic. You are now able to use both these tools, since you have an understanding of the commands and filter syntax. By using what you have learned in this chapter, you can now monitor a network for signs of attack. With this knowledge, you can be effective in stopping network attacks before they can do serious damage. You also learned about two valuable tools that can also diagnose non-malicious network anomalies. It is recommended that you master the use of Wireshark and study for a certification in its use. Many employers in the network security field are impressed with extensive knowledge of tools such as Wireshark.
In later chapters, we will discuss other network security tools that can be used in combination with Wireshark.