Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Two subnets

    Scheduled Pinned Locked Moved Firewalling
    47 Posts 4 Posters 3.2k Views 4 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • johnpozJ Online
      johnpoz LAYER 8 Global Moderator @Antibiotic
      last edited by johnpoz

      @Antibiotic yeah your not understanding is my guess.

      You can use this 2nd router as just a router, and firewall I would take it.. Not sure what firmware your running on it.

      You would just set it up as a downstream router. It just won't nat the IP ranges. Pfsense would nat any traffic from this downstream network, just how its doing now for your 10 and 11 networks.

      pfsense-layer-3-switch.png

      See the left setup with a downstream router (L3 switch doing routing).. That would be your "nat router"

      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 25.07.1 | Lab VMs 2.8, 25.07.1

      A 4 Replies Last reply Reply Quote 0
      • A Offline
        Antibiotic @johnpoz
        last edited by

        @johnpoz I have Asus merlin firmware RT-AX86U Pro router

        pfSense plus 25.07.1 on Topton mini PC
        CPU: Intel N100
        NIC: Intel i-226v 4 pcs
        RAM : 16 GB DDR5
        Disk: 128 GB NVMe
        Brgds, Archi

        A 1 Reply Last reply Reply Quote 0
        • A Offline
          Antibiotic @johnpoz
          last edited by

          @johnpoz Asus router have on WAN option Forward local domain queries to upstream DNS. Is it better to keep ON, because have pfBlockerNG on pfSense? or it doesn't matter

          pfSense plus 25.07.1 on Topton mini PC
          CPU: Intel N100
          NIC: Intel i-226v 4 pcs
          RAM : 16 GB DDR5
          Disk: 128 GB NVMe
          Brgds, Archi

          1 Reply Last reply Reply Quote 0
          • A Offline
            Antibiotic @johnpoz
            last edited by

            @johnpoz Thank you for perfect explanation with a schemes , have in mind a lot new! You are the best)))

            pfSense plus 25.07.1 on Topton mini PC
            CPU: Intel N100
            NIC: Intel i-226v 4 pcs
            RAM : 16 GB DDR5
            Disk: 128 GB NVMe
            Brgds, Archi

            1 Reply Last reply Reply Quote 0
            • A Offline
              Antibiotic @johnpoz
              last edited by

              @johnpoz So finally better to switch OFF NAT and firewall on Wireless router and set on pfSense router interface LAN 192.168.11.1/29 not 24. Is it correct?

              pfSense plus 25.07.1 on Topton mini PC
              CPU: Intel N100
              NIC: Intel i-226v 4 pcs
              RAM : 16 GB DDR5
              Disk: 128 GB NVMe
              Brgds, Archi

              1 Reply Last reply Reply Quote 0
              • A Offline
                Antibiotic @Antibiotic
                last edited by

                @Antibiotic Invalid DHCP pool 192.168.11.10 - 192.168.11.30 for WIFI subnet 192.168.11.0/29 detected. Please correct the settings in Services, DHCP Server

                pfSense plus 25.07.1 on Topton mini PC
                CPU: Intel N100
                NIC: Intel i-226v 4 pcs
                RAM : 16 GB DDR5
                Disk: 128 GB NVMe
                Brgds, Archi

                johnpozJ 1 Reply Last reply Reply Quote 0
                • johnpozJ Online
                  johnpoz LAYER 8 Global Moderator @Antibiotic
                  last edited by

                  @Antibiotic if you set a /29 on pfsense interface - how would you think you could have a dhcp range of .10 to 30?

                  You don't have to use the /29 as your transit.. That just a example, you can use any network you want for your transit 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 25.07.1 | Lab VMs 2.8, 25.07.1

                  A 1 Reply Last reply Reply Quote 0
                  • A Offline
                    Antibiotic @johnpoz
                    last edited by

                    @johnpoz So can leave 192.168.11.1/24?

                    pfSense plus 25.07.1 on Topton mini PC
                    CPU: Intel N100
                    NIC: Intel i-226v 4 pcs
                    RAM : 16 GB DDR5
                    Disk: 128 GB NVMe
                    Brgds, Archi

                    johnpozJ 1 Reply Last reply Reply Quote 0
                    • johnpozJ Online
                      johnpoz LAYER 8 Global Moderator @Antibiotic
                      last edited by

                      @Antibiotic sure.. keep in mind a transit network shouldn't have any "hosts" on it - so not sure why would would "need" a /24.. but sure you can use it as long as doesn't overlap with other networks. When you put hosts on a transit network your most likely going to run into asymmetrical routing problems.

                      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 25.07.1 | Lab VMs 2.8, 25.07.1

                      A 1 Reply Last reply Reply Quote 0
                      • A Offline
                        Antibiotic @johnpoz
                        last edited by Antibiotic

                        @johnpoz So you mean better do not put any devices in LAN of Wireless router?or what it mean hosts?

                        pfSense plus 25.07.1 on Topton mini PC
                        CPU: Intel N100
                        NIC: Intel i-226v 4 pcs
                        RAM : 16 GB DDR5
                        Disk: 128 GB NVMe
                        Brgds, Archi

                        johnpozJ 1 Reply Last reply Reply Quote 0
                        • johnpozJ Online
                          johnpoz LAYER 8 Global Moderator @Antibiotic
                          last edited by

                          @Antibiotic yeah a device.. be it a phone or pc or anything that is going to talk to anything.. Ie not a router.. These devices do not belong on a "transit/connector" 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 25.07.1 | Lab VMs 2.8, 25.07.1

                          A 1 Reply Last reply Reply Quote 0
                          • A Offline
                            Antibiotic @johnpoz
                            last edited by Antibiotic

                            @johnpoz So , again misunderstanding, I can use LAN of Wireless router to connect devices but this devices should belong to transit network. Is it correct? Should be in network for example 192.168.11.0/24

                            pfSense plus 25.07.1 on Topton mini PC
                            CPU: Intel N100
                            NIC: Intel i-226v 4 pcs
                            RAM : 16 GB DDR5
                            Disk: 128 GB NVMe
                            Brgds, Archi

                            johnpozJ 1 Reply Last reply Reply Quote 0
                            • johnpozJ Online
                              johnpoz LAYER 8 Global Moderator @Antibiotic
                              last edited by

                              @Antibiotic dude if your going to use your 11 network to connect your router.. Then those should be the only thing on that network pfsense and your downstream router.

                              Put your stuff on either the 10 network or the 12 network behind your router...

                              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 25.07.1 | Lab VMs 2.8, 25.07.1

                              A 1 Reply Last reply Reply Quote 0
                              • A Offline
                                Antibiotic @johnpoz
                                last edited by

                                @johnpoz So LAN of Wireless router should set for example 192.168.50.1 , Its correct?

                                pfSense plus 25.07.1 on Topton mini PC
                                CPU: Intel N100
                                NIC: Intel i-226v 4 pcs
                                RAM : 16 GB DDR5
                                Disk: 128 GB NVMe
                                Brgds, Archi

                                johnpozJ 1 Reply Last reply Reply Quote 0
                                • johnpozJ Online
                                  johnpoz LAYER 8 Global Moderator @Antibiotic
                                  last edited by

                                  @Antibiotic what? Yes you can use any network you want, as long as its doesn't overlap with yoru lan (10 network) or your lan 2 (11 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 25.07.1 | Lab VMs 2.8, 25.07.1

                                  A 1 Reply Last reply Reply Quote 0
                                  • A Offline
                                    Antibiotic @johnpoz
                                    last edited by

                                    @johnpoz Thank you very much)))

                                    pfSense plus 25.07.1 on Topton mini PC
                                    CPU: Intel N100
                                    NIC: Intel i-226v 4 pcs
                                    RAM : 16 GB DDR5
                                    Disk: 128 GB NVMe
                                    Brgds, Archi

                                    A 1 Reply Last reply Reply Quote 0
                                    • A Offline
                                      Antibiotic @Antibiotic
                                      last edited by

                                      @Antibiotic
                                      pfSense LAN static 192.168.11.1/29 DCHP POOL 192.168.11.1-192.168.11.6
                                      Wireless router WAN :
                                      IP Address static 192.168.11.2
                                      Subnet Mask 255.255.255.0
                                      Default Gateway 192.168.11.1
                                      DNS 192.168.11.1
                                      Wireless router LAN:
                                      IP Address192.168.13.1
                                      Subnet Mask 255.255.255.0
                                      DCHP POOL 192.168.13.1-192.168.13.5
                                      Wireless router NAT and Firewall disabled, router itself have internet but Laptop and Phones, no any internet, please what I'm doing wrong?

                                      pfSense plus 25.07.1 on Topton mini PC
                                      CPU: Intel N100
                                      NIC: Intel i-226v 4 pcs
                                      RAM : 16 GB DDR5
                                      Disk: 128 GB NVMe
                                      Brgds, Archi

                                      johnpozJ 1 Reply Last reply Reply Quote 0
                                      • johnpozJ Online
                                        johnpoz LAYER 8 Global Moderator @Antibiotic
                                        last edited by johnpoz

                                        @Antibiotic why are you changing the IP ranges to /29?? Just leave all your networks /24, not like you have a limted amount of space to work with..

                                        And you have a mask mismatch, you have /29 on pfsense and /24 on your 2nd routers wan????

                                        Did you setup the gateway and route in pfsense for this downstream network? All of the info you need on how to do a downstream router is right there on drawing..

                                        This is perfect example of why you don't complex this up.. Even if you get it working, its clear your not going to have any idea "why" its working.. Or how..

                                        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 25.07.1 | Lab VMs 2.8, 25.07.1

                                        A 1 Reply Last reply Reply Quote 0
                                        • A Offline
                                          Antibiotic @johnpoz
                                          last edited by Antibiotic

                                          @johnpoz Did back to /24 no result, see on picture" pfSense interface rules must pass traffic from downstream subnets not just the interface subnet. Should me create some firewall rule?

                                          pfSense plus 25.07.1 on Topton mini PC
                                          CPU: Intel N100
                                          NIC: Intel i-226v 4 pcs
                                          RAM : 16 GB DDR5
                                          Disk: 128 GB NVMe
                                          Brgds, Archi

                                          johnpozJ 1 Reply Last reply Reply Quote 0
                                          • johnpozJ Online
                                            johnpoz LAYER 8 Global Moderator @Antibiotic
                                            last edited by

                                            @Antibiotic said in Two subnets:

                                            Should me create some fire

                                            How else would they be allowed?

                                            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 25.07.1 | Lab VMs 2.8, 25.07.1

                                            A 1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.