Book Image

Mastering Wireshark

Book Image

Mastering Wireshark

Overview of this book

Wireshark is a popular and powerful tool used to analyze the amount of bits and bytes that are flowing through a network. Wireshark deals with the second to seventh layer of network protocols, and the analysis made is presented in a human readable form. Mastering Wireshark will help you raise your knowledge to an expert level. At the start of the book, you will be taught how to install Wireshark, and will be introduced to its interface so you understand all its functionalities. Moving forward, you will discover different ways to create and use capture and display filters. Halfway through the book, you’ll be mastering the features of Wireshark, analyzing different layers of the network protocol, looking for any anomalies. As you reach to the end of the book, you will be taught how to use Wireshark for network security analysis and configure it for troubleshooting purposes.
Table of Contents (16 chapters)
Mastering Wireshark
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Analyzing brute force attacks


Most of you must be aware of the popularity of brute force attacks. The chances of success are not high. Yet, many security professionals and malicious users implement their password-guessing ability with the help of modern tools. Brute force attack is just a way in which you try to log on to a particular service/application using the password dictionary that might have been created on the basis of the target's profile. Tools such as Cewl, Crunch, and John let you create dictionary files. Even you can salt the passwords. Discussing how to create one for yourself is out of the scope of this book, but I would recommend that you have a look at these tools (all of them come preinstalled with Kali Linux).

To analyze these common and malicious attacks, I will attempt to brute force two important services: Telnet and FTP. You might be aware of these two services and how much they are being used in corporate networking infrastructure. Telnet is used to perform administration...