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Is there a trick to forwarding port 80?

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  • Is there a trick to forwarding port 80?

    I'm trying to route port 80 from outside my network to a reverse proxy inside my network.

    I have the port forwarding rule set to: Destined Local:True, Destination Port:80
    It's forwarded to port 80 of the reverse proxy's IP.

    This works perfectly from *inside* my network, but is unreachable from outside.

    I realize Untangle reserves port 80 for its own services by default, I've changed the HTTP port it uses.
    I'm only using HTTPS to connect to Untangle's admin features anyway.​

    If I change the rule's Destination Port to something other than 80, it works from outside (but only with the port specified).
    What am I doing wrong? Why is port 80 not being forwarded?

    If anyone can point me in the right direction, I'd appreciate it.

  • #2
    You will need to move the service ports from 80. As 80 is reserved for the GUI. This will change the port of the admin GUI.

    Config -> Network -> Services. All the reserve ports are listed at the bottom of the port forwards page.

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    • #3
      Thank you, jcoffin, but I've already done that.

      I've moved the service port from 80 to 84, but port 80 is still not forwarding as expected.
      Last edited by ParticleBeam; 05-24-2023, 07:35 PM.

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      • #4
        2 rules only:
        Destination address =your public ip address (if is fixed) or any wan (if dinamic ip address)
        Destination port =80
        Delete "destined local"
        Advice: enable threat prevention or your proxy will have a short lifespan​
        The world is divided into 10 kinds of people, who know binary and those not

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        • #5
          Thank you dwasserman. I do have a dynamic IP, but there's not an option for a Destination Interface. See image below.
          I did try my current public IP as the Destination Address, but port 80 was still not forwarding.

          I don't think I'm too far off using the rules: Destined Local:True and Destination Port:80. I've used a similar set successfully for other port forwards.
          In fact, when I forward port 81, it works from outside my network. -- When I change it to 80, it doesn't.

          It blows my mind that port 80 is so difficult to forward. -- Hopefully someone can tell me what I'm missing.


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          • #6
            I think I know why forwarding port 80 isn't working. -- It actually is, but my ISP is blocking it.
            I feel like an idiot. :P

            Thank you both for your help and suggestions.

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            • #7
              ISPs gonna ISP. Glad you found the problem!
              Græme Ravenscroft • Technical Marketing Engineer
              ('gram', like the unit of measurement)
              he/him
              How can we make Arista ETM products better?

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