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

    Assign 3rd interface to Pfsense

    Scheduled Pinned Locked Moved General pfSense Questions
    27 Posts 3 Posters 2.0k Views
    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.
    • stephenw10S
      stephenw10 Netgate Administrator
      last edited by

      That is all you need to do to allow clients on that interface out if the rest of the install is default.

      You may also want to enable the DHCP server on the new interface if the clients there need to use DHCP.

      Steve

      1 Reply Last reply Reply Quote 0
      • T
        techman2005
        last edited by

        After adding the new interface and creating the any any firewall rule.

        • I receive a dhcp address from my server
          -- I can ping the gateway which I made 10.x.x.254 my switch vlan interface is 10.x.x.1
          -- I can ping any device on that LAN
          --trying to ping outside 4.2.2.2 it doesn't work

        What could I be missing ?

        1 Reply Last reply Reply Quote 0
        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Is that the gateway on the client?

          pfSense should not have a gateway on that internal interface. Doing so will make it outbound NAT to it in the defaul auo mode for outbound NAT.

          Steve

          T 1 Reply Last reply Reply Quote 0
          • T
            techman2005 @stephenw10
            last edited by

            @stephenw10

            The client is receiving an address of 10.1.40.21 /24 and gateway of 10.1.40.254

            snip_20190420110634.png

            1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator
              last edited by

              Ok that should be fine then.

              So set a continuous ping running to 4.2.2.2 then check the state table in Diag > States. Filter by 4.2.2.2.

              You should see a state on the new interface and a state with NAT on the WAN interface.

              Steve

              T 1 Reply Last reply Reply Quote 0
              • T
                techman2005 @stephenw10
                last edited by

                @stephenw10

                Thanks Steve for your reply, I checked the states and filtered by 4.2.2.1, unfortunately it showed nothing. The firewall rule looks as below.

                snip_20190420112118.png

                K 1 Reply Last reply Reply Quote 0
                • K
                  Konstanti @techman2005
                  last edited by Konstanti

                  @techman2005
                  Outbound NAT is configured for 10.1.40.0/24 ????

                  T 1 Reply Last reply Reply Quote 0
                  • T
                    techman2005 @Konstanti
                    last edited by

                    @Konstanti

                    it appears to be there. Is there another good way to look at the logs? NAT is auto generated.

                    snip_20190420125916.png

                    K 1 Reply Last reply Reply Quote 0
                    • K
                      Konstanti @techman2005
                      last edited by Konstanti

                      @techman2005
                      Try to run Packet Capture or tcpdump on the wan interface to see what's going on
                      interface WAN
                      Protocol ICMP
                      Host 4.2.2.2

                      Ideally , you should see this result

                      21:09:16.501092 IP XXX.XXX.1.96 > 4.2.2.2: ICMP echo request, id 25266, seq 0, length 64
                      21:09:16.556329 IP 4.2.2.2 > XXX.XXX.1.96: ICMP echo reply, id 25266, seq 0, length 64

                      T 1 Reply Last reply Reply Quote 0
                      • T
                        techman2005 @Konstanti
                        last edited by

                        @Konstanti

                        It worked for the new nterface but it was blank for wide are network

                        snip_20190420132304.png

                        K 1 Reply Last reply Reply Quote 0
                        • K
                          Konstanti @techman2005
                          last edited by Konstanti

                          @techman2005

                          If this is the wan interface, you can see that nat outbound does not work correctly
                          Try to use Manual Outbound NAT

                          40c80d49-87b4-4a28-b970-e081a2a6cd70-image.png

                          1 Reply Last reply Reply Quote 0
                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            If you're seeing packets come in but no states generated either on DEVICENET or WAN (you should see both) then something is blocking that traffic. Do you see it blocked in the firewall logs? Which rule is blocking it?
                            If not you may have something set to block without logging like maybe pfBlocker or Snort.

                            Steve

                            1 Reply Last reply Reply Quote 0
                            • T
                              techman2005
                              last edited by

                              I was able to get packet captures from both WAN and D net. where do I go from here? all your help is greatly appreciated.

                              snip_20190420170950.png

                              snip_20190420170949.png

                              1 Reply Last reply Reply Quote 0
                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                Are you using 8.8.8.8 as the monitoring IP for the WAN? Or pinging it from anywhere else?

                                Because those pings on DEVICENET are at ~5s internals but on WAN are at 1s intervals. I don't think that's the same traffic.

                                You were seeing no open states and they will be there is traffic is being passed.

                                Check the firewall logs.

                                Do you have any packages installed?

                                Steve

                                T 1 Reply Last reply Reply Quote 0
                                • T
                                  techman2005 @stephenw10
                                  last edited by

                                  @stephenw10

                                  I had 2 separate computers. I just verified the traffic again.

                                  1e1c1aa6-27a5-4bfd-8194-473855f26a1f-image.png

                                  08fde7fa-4016-4768-94f7-d5d798433279-image.png

                                  1 Reply Last reply Reply Quote 0
                                  • stephenw10S
                                    stephenw10 Netgate Administrator
                                    last edited by

                                    Still 1s intervals on WAN and 5 internally. Use a different IP that isn't in use anywhere else.

                                    Check the firewall logs.

                                    Do you have any packages installed?

                                    T 1 Reply Last reply Reply Quote 0
                                    • T
                                      techman2005 @stephenw10
                                      last edited by

                                      @stephenw10

                                      That interface doesn't even appear in the firewall logs.
                                      bd76757f-cb63-44fd-b818-5116224d6edc-image.png

                                      Yes I have a few packages installed screenshot attached.

                                      8f86d2e1-4b70-4308-a680-3c72b4e5d336-image.png

                                      K 1 Reply Last reply Reply Quote 0
                                      • stephenw10S
                                        stephenw10 Netgate Administrator
                                        last edited by

                                        Ok, none of those packages should be an issue.

                                        Did you filter the firewall logs by the IP you were trying to ping? Or by the interface you were pinging from?
                                        That screenshot shows 21s of logs so they moght just not be shown there.

                                        But, again, try pinging by some other IP that is not used anywhere else. Leave the ping running then check the state table and filter by the target IP. Leave the interfaces set to 'all'. You should see states on both the internal interface and WAN. You can verify that by testing from a working interface so you know what it should look like.

                                        Steve

                                        1 Reply Last reply Reply Quote 0
                                        • K
                                          Konstanti @techman2005
                                          last edited by Konstanti

                                          @techman2005
                                          Hey
                                          Show the output of the command ifconfig

                                          or
                                          Status/interfaces (Devicenet)

                                          1 Reply Last reply Reply Quote 0
                                          • T
                                            techman2005
                                            last edited by

                                            So I did a ping to 8.8.4.4 from a device on d net and received the following for d net interface and didn't receive anything for wan.

                                            c1e5b240-ca29-41dd-8aa0-415fb9f57e0c-image.png

                                            The output for d net interface

                                            5354070d-5c85-4030-bd3a-2b7325cefdcc-image.png

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