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

NAT logging

NAT is logged in rules where Log Generation | Per Connection are enabled. As per the recommendations made in Chapter 8, Introduction to Policies, Layers, and Rules, this should be the default setting for the firewall-only rules.

The NAT portion of the log card is really easy to understand, but I have seen repeated questions in forums regarding these two fields: NAT Rule Number and NAT Additional Rule Number.

To illustrate, let’s take a look at the following log card:

Figure 10.29 – The NAT Rule Number and NAT Additional Rule Number log fields

In the preceding screenshot, we can see the following:

  • Traffic is accepted from host 10.10.10.21 [1] to host 200.100.0.5 [2].
  • The translated source IP is 10.30.30.1 [3], which belongs to one of the virtual IPs of our cluster, and the translated destination is 10.30.30.5 [4].
  • We can see that NAT Rule Number is 4 [5] and NAT Additional Rule Number is 9 [6].

This log...