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Multiple DHCP IP addresses on one interface

Scheduled Pinned Locked Moved DHCP and DNS
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  • J
    JKnott @renat_kaa
    last edited by Jul 24, 2019, 3:55 PM

    @Renat said in Multiple DHCP IP addresses on one interface:

    If DHCP - Switch + VLANs

    Does the WAN interface have a VLAN? Does the ISP support it? Otherwise, no go.

    I already covered the static address when I mentioned an alias which is what a virtual IP is.

    PfSense running on Qotom mini PC
    i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
    UniFi AC-Lite access point

    I haven't lost my mind. It's around here...somewhere...

    R 1 Reply Last reply Jul 24, 2019, 4:00 PM Reply Quote 0
    • R
      renat_kaa @stijnrosaer
      last edited by Jul 24, 2019, 3:56 PM

      @stijnrosaer you can use reverse proxy (e.g. HAProxy package)

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      • J
        JKnott @stijnrosaer
        last edited by Jul 24, 2019, 3:56 PM

        @stijnrosaer said in Multiple DHCP IP addresses on one interface:

        Is there a way of giving my local server a public IP? I know the mac address of it. The server is attached through the LAN interface.

        Assuming you have NAT, then just port forward to the server. It's common practice.

        PfSense running on Qotom mini PC
        i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
        UniFi AC-Lite access point

        I haven't lost my mind. It's around here...somewhere...

        S 1 Reply Last reply Jul 24, 2019, 4:02 PM Reply Quote 1
        • R
          renat_kaa @JKnott
          last edited by renat_kaa Jul 24, 2019, 4:01 PM Jul 24, 2019, 4:00 PM

          @JKnott said in Multiple DHCP IP addresses on one interface:

          @Renat said in Multiple DHCP IP addresses on one interface:

          If DHCP - Switch + VLANs

          Does the WAN interface have a VLAN? Does the ISP support it? Otherwise, no go.

          I already covered the static address when I mentioned an alias which is what a virtual IP is.

          Hmm... You can create VLAN on any interface, even WAN. But VLANs have the same MAC address. I guess you cannot use it with one ISP and one DHCP server.

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          • S
            stijnrosaer @JKnott
            last edited by Jul 24, 2019, 4:02 PM

            @JKnott That is not a good solution for my problem. I am actually trying to get an TV decoder to get a public IP. This is the issue:

            The decoder has two mac addresses. One should be an internal address, BUT the other is actually an 10.201.. address. This second one is given by the ISP's DHCP server and is used to verify my TV subscription as well as extra packages like sport or playback.

            J 1 Reply Last reply Jul 24, 2019, 4:15 PM Reply Quote 0
            • R
              renat_kaa
              last edited by Jul 24, 2019, 4:06 PM

              @stijnrosaer it is better if you create different topics with different items.

              S 1 Reply Last reply Jul 24, 2019, 4:09 PM Reply Quote 0
              • S
                stijnrosaer @renat_kaa
                last edited by Jul 24, 2019, 4:09 PM

                @Renat Thank you. I will. This is the post
                https://forum.netgate.com/topic/145145/public-ip-for-device-on-lan

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                • R
                  renat_kaa
                  last edited by Jul 24, 2019, 4:11 PM

                  @stijnrosaer according to multiple DHCP IP addresses you should use different physical (virtual) interfaces.

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                  • J
                    JKnott @stijnrosaer
                    last edited by Jul 24, 2019, 4:15 PM

                    @stijnrosaer said in Multiple DHCP IP addresses on one interface:

                    That is not a good solution for my problem. I am actually trying to get an TV decoder to get a public IP.

                    You cannot have a public IP on any LAN, NAT or NOT, where it doesn't belong. It would not be able to communicate with anything.

                    PfSense running on Qotom mini PC
                    i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
                    UniFi AC-Lite access point

                    I haven't lost my mind. It's around here...somewhere...

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                    • J
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz Jul 24, 2019, 4:23 PM Jul 24, 2019, 4:23 PM

                      If you want multiple public IPs via dhcp for wan on pfsense.. Then use another physical interface, and put a switch between your isp device and pfsense. Now you have multiple wans, with different IPs.

                      You could then do port forwards for 1 IP to server IP behind, or even 1:1 nat, etc.

                      Can really do it with just vlan on 1 physical nic in pfsense, because it will use the same mac.

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