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Mastering pfSense, - Second Edition

You're reading from Mastering pfSense, - Second Edition Manage, secure, and monitor your on-premise and cloud network with pfSense 2.4

Product type Book

Published in May 2018

Publisher

ISBN-13 9781788993173

Pages 450 pages

Edition 2nd Edition

Languages

Concepts

Author (1):

David Zientara

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Table of Contents (15) Chapters

Preface

1. Revisiting pfSense Basics FREE CHAPTER

2. Advanced pfSense Configuration

3. VLANs

4. Using pfSense as a Firewall

5. Network Address Translation

6. Traffic Shaping

7. Virtual Private Networks

8. Redundancy and High Availability

9. Multiple WANs

10. Routing and Bridging

11. Extending pfSense with Packages

12. Diagnostics and Troubleshooting

13. Assessments

14. Another Book You May Enjoy

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Chapter 4 – Using pfSense as a Firewall

The principle of least privilege.
Block will drop traffic silently, while Reject will send back a packet (RST for TCP or ICMP Port Unreachable for UDP).
We will be able to connect to Recode; the block rule will have no effect because it was placed after the "Allow LAN to any" rule.

We will not be able to connect to Recode; the block rule will match the traffic to Recode before the “Allow LAN to any” rule.
(a) We will not be able to connect to Recode; the new “default allow” rule will be invoked after the block rule. (b) We will be able to connect to Recode; the new "default allow" rule will be invoked before the block rule. (c) The default "Allow LAN to any" rules have no effect on traffic flow anymore because they are never reached; the floating "default allow&quot...

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Authors (1)

David Zientara

David Zientara

David Zientara is a software engineer living in northern New Jersey. He has over 20 years of experience in IT. In the mid-1990s, David became the lead software engineer for Oxberry LLC, a digital imaging company headquartered in New Jersey. In this capacity, he played a major role in developing a new software package for the company's equipment. In the mid-2000s, David took an interest in computer networking, an interest that led him to learn about m0n0wall and, eventually, pfSense. David currently is employed with the Prasad Corporation in a consulting position and is also the author of Learn pfSense 2.4 and Mastering pfSense 2.4, also available from Packt Publishing.

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