Hacking firewalls

Learn how to recognize and fight common techniques hackers use to attack and subvert firewalls.

This sample chapter, taken from McGraw-Hill's Hacking Exposed, Fifth Edition, provides detailed insight on how to fight common firewall hacking and subversion methods and tools such as the following:

• Direct scanning
• Route tracing
• Banner grabbing
• Simple deduction with nmap
• Port identification
• Raw packet transmissions
• Firewalk
• Source port scanning
• Checkpoint trickery
• ICMP and UDP tunneling
• File browsing

Network administrators and IT security professionals will find this chapter's abundant sample commands and output particularly helpful. The authors' "Risk Rating" of each attack method also helps you know which hacks you should study most carefully.



Title: Hacking Exposed, Fifth Edition
ISBN: 0072260815
Published: April 19, 2005
Authors: Stuart McClure, Joel Scambray, and George Kurtz
Chapter: Chapter 9: Firewalls
Published by McGraw-Hill