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Penetration Testing Bootcamp

You're reading from   Penetration Testing Bootcamp Quickly get up and running with pentesting techniques

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787288744
Length 258 pages
Edition 1st Edition
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Author (1):
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Jason Beltrame Jason Beltrame
Author Profile Icon Jason Beltrame
Jason Beltrame
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Table of Contents (11) Chapters Close

Preface 1. Planning and Preparation FREE CHAPTER 2. Information Gathering 3. Setting up and maintaining the Command and Control Server 4. Vulnerability Scanning and Metasploit 5. Traffic Sniffing and Spoofing 6. Password-based Attacks 7. Attacks on the Network Infrastructure 8. Web Application Attacks 9. Cleaning Up and Getting Out 10. Writing Up the Penetration Testing Report

Firewall reconnaissance with Firewalk

Firewalk is an active reconnaissance network scanner that will help determine what Layer 4 protocols our router or firewall will pass or deny. This is a great tool for finding a way through an environment by leveraging a bad or missing ACL within one of your network devices. Firewalk leverages ICMP error messages and TTL expirations to let us know whether a port is open or not, very similar to traceroute. If a port is opened or allowed, the packet destined for that port will typically be silently dropped by the security device. But, if the port is closed, the TTL of the packet will expire at the next hop and issue an ICMP_TIME_EXCEEDED error message.

Firewalk is a two-phase command. The first phase is called the hop ramping phase. Its sole job is to find the correct hop count to the target gateway so that is has the right TTL (hop count +...

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