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    Unable to traffic between LAN and OPT1

    Scheduled Pinned Locked Moved Firewalling
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    • C
      chengli
      last edited by

      dear all, How can i traffic between LAN and OPT1. I tried static route and firewall rules but failed.

      firewall rules i tried:
      Interface: LAN
      Source: LAN subnet
      Destination: any

      Interface: OPT1
      Source: OPT1 subnet
      Destination: any

      Following is my interface details :
      WAN - ip: 192.168.15.10
            subnet: 255.255.255.0
            Gateway: 192.168.15.1    (set as default gateway)

      LAN - ip:192.168.1.10
            subnet: 255.255.255.0
            Gateway:empty

      OPT1- ip:10.0.0.10
            subnet: 255.255.255.0
            Gateway:empty

      Any ideas? Thanks

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by

        All that is needed is creation of your firewall rules.. There is no need for creating of any routes.  Pfsense is directly attached to the networks via its interfaces so it knows how to get there.

        How do you have devices connected to these different networks?  Are you using a smart switch?  2 different dumb switches - device directly connected to the interface?  Can the device on opt1 get ip via dhcp, can it ping the opt1 ip 10.0.0.10 ?

        Quite often common issues users run into with this is they forget the devices firewall.  Windows out of the box for example would block access from anything not on its local network.  So while you ping from lan to opt1 network the devices on opt1 would not answer.

        Other common problem is creating rules pointing to a specific gateway..  Such a rule would not allow access to the other local network because traffic would be forced out the gateway.  If you want to send traffic out a specific gateway via say a vpn connection or something you would need to put a rule above that rule that allows access to the other network without setting a gateway on the rule so that pfsense can use its own internal routing to know where to send the traffic.

        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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        • C
          chengli
          last edited by

          thanks for your fast respond.

          Devices like following: i tried to use OPT PC to ping lan printer  but failed. LAN PC can ping LAN printer
          OPT1 PC(10.0.0.2/24) –--> PFSENSE --> unmanage switch---> LAN printer(192.168.1.190/24 ) <---->  LAN PC(192.168.1.20).

          for OPT1 : pc can get ip from  dhcp and ping 10.0.0.10.

          Besides that, i had set the Interface: LAN
          Source: LAN subnet
          Destination: any

          Interface: OPT1
          Source: OPT1 subnet
          Destination: any

          am i missing something else?

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            "LAN printer"

            Ah – does the printer have a gateway set to pfsense lan IP?  I have seen many a printer that don't have or some that don't even allow for a gateway.  So the only way to talk to them is being on the same network as them.

            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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            • C
              chengli
              last edited by

              OK .. we don't mention about the LAN printer.

              I cant ping the LAN PC (192.168.1.20) from OPT PC(10.0.0.2)  as well and even the IP of LAN interface 192.168.1.10.

              Thanks for your patient and my stupid.

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                please post up picture of your opt1 rules.

                And you say you can ping the opt pfsense IP..  But not the lan IP of pfsense from this opt pc.. You sure you have the gateway and mask setup correctly on the opt pc?  It got this via dhcp from pfsense?

                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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                • C
                  chengli
                  last edited by

                  yes .. for the opt PC's ip is via dhcp from pfsense. Only the LAN PC is configure as static IP. I'M sure the all the pc's ip configure is correct because i could use LAN PC / OPT1 PC to access internet via pfsense. Just unable to ping each other network.

                  From OPT PC, i can access the web configuration of pfsense as well.

                  i slightly change the the ip of pfsense as below:

                  WAN - ip: 192.168.0.102
                        subnet: 255.255.255.0
                        Gateway: ip: 192.168.0.12    (set as default gateway)

                  LAN - ip:10.0.0.11
                        subnet: 255.255.255.0
                        Gateway:empty

                  OPT1- ip:192.168.1.12
                        subnet: 255.255.255.0
                        Gateway:empty

                  Please let me know if you need more info… i try to provide. thanks

                  Untitled.png
                  Untitled.png_thumb

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                  • johnpozJ
                    johnpoz LAYER 8 Global Moderator
                    last edited by

                    "Just unable to ping each other network."

                    The pfsense interface of the other network or the other pc??

                    Do you have any rules in floating?

                    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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                    • C
                      chengli
                      last edited by

                      "Just unable to ping each other network."

                      sorry ..  i mean LAN and OPT1 cant traffic.

                      No rules in floating.

                      FROM the LAN side everything is ok:
                      -I can ping the pfsense LAN interface address
                      -I CAN NOT ping the pfsense OPT interface address
                      -I CAN NOT ping a host on the OPT subnet

                      FROM the OPT side:
                      -I can ping the pfsense LAN interface address
                      -I can ping the pfsense OPT interface address
                      -I CAN NOT ping a host on the LAN subnet.

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                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        FROM the LAN side everything is ok:
                        -I can ping the pfsense LAN interface address
                        -I CAN NOT ping the pfsense OPT interface address
                        -I CAN NOT ping a host on the OPT subnet

                        How is that ok??

                        You should be able to ping the opt interface address and hosts on opt subnet

                        Your lan side host - does it have the correct mask?  That would explain it..

                        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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                        • C
                          chengli
                          last edited by

                          My god, thanks johnpo.

                          Finally pfsense can working by adding the gateway on the pfsense LAN interface. As the following attachment.

                          currently,
                          -I can ping the pfsense LAN interface address.
                          -I can ping the pfsense OPT interface address.
                          -I can ping a host on the OPT subnet.
                          -I CAN NOT PING GOOGLE.

                          I always thought pfsense LAN/ OPT1 interface SHOULD NOT put any IP in " IPv4 Upstream gateway" but it indeed work. BUT I CAN NOT PING GOOGLE RIGHT NOW.  :-X

                          May i know,  what situation we should not put the IP in IPv4 Upstream gateway?

                          LAN.png
                          LAN.png_thumb

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                          • pttP
                            ptt Rebel Alliance
                            last edited by

                            You don't set a GW for a LAN type interface

                            https://doc.pfsense.org/index.php/Connectivity_Troubleshooting#LAN_Interface

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                            • C
                              chengli
                              last edited by

                              Once i set back the pfsense LAN INTERFACE TO EMPTY.

                              FROM the LAN side:
                              -I can ping the pfsense LAN interface address.
                              -I CAN ping the pfsense OPT interface address.
                              -I CAN NOT ping a host on the OPT subnet.
                              -I can ping GOOGLE.

                              Actually what i missed ?? my god…

                              LAN PC IP : 10.0.0.10
                              subnet mask : 255.255.255.0
                              gateway  : 10.0.0.11

                              OPT PC IP : 192.168.1.3
                              subnet mask : 255.255.255.0
                              gateway  : 192.168.1.12

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                              • C
                                chengli
                                last edited by

                                I think i found the solution already .. by using NAT.

                                -I can ping the pfsense LAN interface address.
                                -I can ping the pfsense OPT interface address.
                                -I can ping a host on the OPT subnet.
                                -I can ping GOOGLE.

                                Thanks for people who suggest me solution.

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                                • GertjanG
                                  Gertjan
                                  last edited by

                                  Natting between LAN's ?  :o
                                  @chengli:

                                  LAN PC IP : 10.0.0.10
                                  subnet mask : 255.255.255.0
                                  gateway  : 10.0.0.11

                                  What ? A Gateway ?
                                  In the "Static IPv4 Configuration" section you saw this :

                                  If this interface is an Internet connection, select an existing Gateway from the list or add a new one using the "Add" button.
                                  On local area network interfaces the upstream gateway should be "none".

                                  @chengli:

                                  OPT PC IP : 192.168.1.3
                                  subnet mask : 255.255.255.0
                                  gateway  : 192.168.1.12

                                  Please read -> https://forum.pfsense.org/index.php?topic=135388.msg741800#msg741800

                                  No "help me" PM's please. Use the forum, the community will thank you.
                                  Edit : and where are the logs ??

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