Book Image

Check Point Firewall Administration R81.10+

By : Vladimir Yakovlev
Book Image

Check Point Firewall Administration R81.10+

By: Vladimir Yakovlev

Overview of this book

Check Point firewalls are the premiere firewalls, access control, and threat prevention appliances for physical and virtual infrastructures. With Check Point’s superior security, administrators can help maintain confidentiality, integrity, and the availability of their resources protected by firewalls and threat prevention devices. This hands-on guide covers everything you need to be fluent in using Check Point firewalls for your operations. This book familiarizes you with Check Point firewalls and their most common implementation scenarios, showing you how to deploy them from scratch. You will begin by following the deployment and configuration of Check Point products and advance to their administration for an organization. Once you’ve learned how to plan, prepare, and implement Check Point infrastructure components and grasped the fundamental principles of their operation, you’ll be guided through the creation and modification of access control policies of increasing complexity, as well as the inclusion of additional features. To run your routine operations infallibly, you’ll also learn how to monitor security logs and dashboards. Generating reports detailing current or historical traffic patterns and security incidents is also covered. By the end of this book, you'll have gained the knowledge necessary to implement and comfortably operate Check Point firewalls.
Table of Contents (21 chapters)
1
Part 1: Introduction to Check Point, Network Topology, and Firewalls in Your Infrastructure and Lab
6
Part 2: Introduction to Gaia, Check Point Management Interfaces, Objects, and NAT
13
Part 3: Introduction to Practical Administration for Achieving Common Objectives

The need for NAT

NAT is most commonly used to circumvent the problems caused by the shortage of public IP addresses. Due to the exhaustion of public IPv4 addresses, private networks predominately use IPv4 addresses defined in RFC 1918 (RFC, or Request for Comment, being the form of publication for the development and adoption of standards of communication for the internet). These are comprised of the following ranges:

Table 10.1 – The RFC 1918 IPv4 address ranges and networks

These addresses are reserved for use in private environments that are isolated from one another. Traffic to external services hosted on the internet from these ranges (and the networks they are comprised of) should either be translated into public IP addresses or be discarded by the upstream routers.

Conversely, services hosted in private networks usually reside on hosts with private IP addresses. To make these services accessible from the outside, they are statically translated...