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    LAN subnets can't see LAN interface of pfsense

    Routing and Multi WAN
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    • S
      Spike_1197
      last edited by

      newbie

      I am attempting to use pfsense for the firewall between our Lync Edge servers (Edge and reverse proxy) inside interfaces and our LAN. pfsense LAN ip is 192.168.1.5. LAN subnet where Lync FE is 192.168.3.0/24. I may be over complicating. I can get to the pfsense Web config if I am on the same subnet (192.168.1.0/24) but not on the subnet where the Lync FE resides.

      is this an internal routing issue?

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      • jahonixJ
        jahonix
        last edited by

        You need to explain your network more precisely.
        192.168.1.5 is a /24 and your LAN?
        192.168.3.0 /24 is what? Your WAN or Opt1 or …?

        Right now it could be ruleset, routing, switching, ... you name it.

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        • S
          Spike_1197
          last edited by

          here is a quick and dirty diagram.

          quickdiag.png
          quickdiag.png_thumb

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            Huh.. How do you have a 192.168.1.5/32 address on what I assume is pfsense lan?  And then a network of 192.168.3/24???  That would never work trying to connect from a 192.168.3.

            If pfsense is going to be on a 192.168.3/24 network then it should have an IP in the 192.168.3 network.

            An intelligent man is sometimes forced to be drunk to spend time with his fools
            If you get confused: Listen to the Music Play
            Please don't Chat/PM me for help, unless mod related
            SG-4860 24.11 | Lab VMs 2.7.2, 24.11

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            • S
              Spike_1197
              last edited by

              Sorry.
              So the LAN interface is 192.168.1.5. I believe i just misused subnet notation. The way we have our internal network setup is separated into logical subnets (logical to us I guess). 192.168.1.0/24 is where the users reside. 192.168.3.0/24 is where the servers reside. The two subnets can talk to each other through layer 3 switch and some routing.

              seems like I am trying to complicate. I will go about putting the LAN interface of pfsense on the 192.168.3.0/24 subnet.

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                Ah well if you have a L3 switch (router) downstream then pfsense should be connected to this router (L3 switch doing rouing) via a transit network.. Otherwise your going to have all kinds of asymmetrical issues.  BTW you didn't list your downstream router in your drawing and still use of /32 on your interface is going to be an issue as well.  You would want to use the correct mask for whatever your transit is - common would be say a /30

                Then your also going to have to make sure your rules on your transit interface allow for the downstream networks, and you're also going to have to make sure your outbound nat is setup to nat the downstream networks.

                This has been coming up a bit lately.. If I find the time I will put together a wiki article on setting up downstream routers.. I thought I just did a thread about this.. Let look if I can find it.

                edit:
                Here is the one of the threads where went over the problem asymmetrical, and talked about downstream.. there have been others but I found this one first
                https://forum.pfsense.org/index.php?topic=105825.15

                Derelict put together a nice drawing even in that thread.

                An intelligent man is sometimes forced to be drunk to spend time with his fools
                If you get confused: Listen to the Music Play
                Please don't Chat/PM me for help, unless mod related
                SG-4860 24.11 | Lab VMs 2.7.2, 24.11

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