GRE setup - how to connect two sites?

  • I have two pSense routers that are remote to each other. Both have dynamic IP addresses but use DDNS.

    pfSense A:
    pfSense B:

    What is the process to connect the sites so clients of those networks can ping each other?

    • GRE tunnel setup is not clear in wiki and in the book. What IPs go where when creatung the tunnel?

    • Also, it's not clear what to do after creation of GRE - should interface for it be Enabled? Should there be a static IP assigned?

    I am aware of security concerns and this is a lab testing environment.

    I am appreciate some feedback.

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