Hereafter is my today address plan and related cabling which works partially. on top of this picture I have in mind to offer a OpenVPN connection NATed to the OPT subnet (but this is for later because the first step does not work).


the picture is more delailed:


the traffic between internet & subnet works perfectly

the traffic between subnet and subnet does not work

I have looked at many answers in the forum and tested a lot of the proposed solutions and I was stuck until ... I rebooted my pfsense appliance.

Thank you @Colt for your sharpness and your suggestions

@Tommiie I thank you for the very valuable debugging guidance

In case you are interested in the firewall rules and the router settings, feel free to ask me, I spent so many hours on this ans I am happy to share the screenshots of the settings.

Following the good suggestion of @Colt (see the comments) I don't remove the faulty picture, by "faulty" I mean the set-up that does work !

I rather add a picture with the working set-up one.

In all cases, be sure to reset the FW states before testing a new FW configuration.

hoping it helps !

enter image description here

  • Please share (by updating your question) the relevant configurations on the pfSense and the router as well as the troubleshooting commands and their output used. What comes to mind: routing tables, firewall rules, traceroute output. – Tommiie Mar 6 '19 at 13:36
  • I suspect you are NATing between your subnet, but you should not IMO – yagmoth555 Mar 7 '19 at 15:41

You are putting the firewall rules on the wrong interfaces. Use the same rules, but just switch them: In LAN rules, pass any LANnet to OPTnet, and in OPT rules, pass any OPTnet to LANnet.

  • Indeed @Colt, you are fully right, in fact my picture is wrong, The rules you mentionned were well those I put, but stupidley it missed to reset either the states or the appliance. I am sorry to generate traffic because of this. And I will correct the picture. Now I am trying to route the OpenVPN traffic to the OPT subnet. – Regpa Mar 7 '19 at 21:45
  • You should probably leave the picture alone so that this Q/A is helpful and not confusing to others that may have similar issue – Colt Mar 8 '19 at 2:02

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