In the first part of this chapter we will learn how to perform Network Address Translation (NAT) and Port Address Translation (PAT), also referred to as Network Address and Port Translation (NAPT), with iptables. After that, we will learn what packet mangling is and how to mangle packets.
Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT and l7-filter
By :
Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT and l7-filter
By:
Overview of this book
Firewalls are used to protect your network from the outside world. Using a Linux firewall, you can do a lot more than just filtering packets. This book shows you how to implement Linux firewalls and Quality of Service using practical examples from very small to very large networks.
After giving us a background of network security, the book moves on to explain the basic technologies we will work with, namely netfilter, iproute2, NAT and l7-filter. These form the crux of building Linux firewalls and QOS. The later part of the book covers 5 real-world networks for which we design the security policies, build the firewall, setup the script, and verify our installation.
Providing only necessary theoretical background, the book takes a practical approach, presenting case studies and plenty of illustrative examples.
Table of Contents (14 chapters)
Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and L7-filter
Credits
About the Author
About the Reviewer
Preface
Free Chapter
Networking Fundamentals
Security Threats
Prerequisites: netfilter and iproute2
NAT and Packet Mangling with iptables
Layer 7 Filtering
Small Networks Case Studies
Medium Networks Case Studies
Large Networks Case Studies
Index
Customer Reviews