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Mastering pfSense

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

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Product type Paperback
Published in May 2018
Publisher
ISBN-13 9781788993173
Length 450 pages
Edition 2nd Edition
Tools
Concepts
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Author (1):
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David Zientara David Zientara
Author Profile Icon David Zientara
David Zientara
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Table of Contents (15) Chapters Close

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

Troubleshooting

If you have created a 1:1 NAT or Port Forwarding entry and it does not have the expected effect, then there are several possible causes:

  • You may have misconfigured the NAT entry
  • The NAT entry may be configured correctly, but something else necessary for NAT to work was misconfigured (such as a firewall rule or a virtual IP address)
  • There may be a software misconfiguration (such as port forwarding for a web server may be configured correctly, but the web server itself may be misconfigured)
  • The issue may be beyond your control (such as, your ISP blocking a port)

As an initial step, you may want to try to access the resource locally (keeping in mind that if we are remapping the port from one port number to another, use the port number of the port on the local node hosting the resource). Use the local IP address of the node, even if you have NAT reflection enabled...

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