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    pfSense HA LAN Interfaces Only

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    • V
      viragomann @CloudNode
      last edited by

      @iptvcld
      The gateway and gateway group are looking correctly, but you have to troubleshoot the gateway monitoring problem.
      Ensure that pinging 8.8.8.8 from 192.168.2.81 is allowed on the master and that there is an outbound NAT rule present on WAN for that source.

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        CloudNode @viragomann
        last edited by

        @viragomann I did a test from my master to ping out to 8.8.8.8 and that works ok.

        Also on master; this is what my outbound nat section looks like. I can see under source there is y LAN network 192.168.2.0/24

        788a425d-b88e-4a73-89f7-fd793c21757c-image.png

        I am not too sure what else i should be looking at; would really appreciate your help. thank you!

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          viragomann @CloudNode
          last edited by

          @iptvcld
          I think, I've forgotten something:
          On the secondary you will need to add an outbound NAT rule to LAN for 127.0.0.0/8 and switch into hybrid mode.

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            CloudNode @viragomann
            last edited by

            @viragomann Thanks; so on my backup PF i did the below:
            c4821726-a187-4e34-a697-59199560e1b7-image.png

            This did not work still then i tried this
            2238c034-3db5-4684-9350-21da03cc81df-image.png

            But this did not work as well.

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              viragomann @CloudNode
              last edited by

              @iptvcld
              Keep the first one.

              Tried to restart the machine?

              If it still doesn't take a packet capture on the LAN interface. You should see periodic pings to 8.8.8.8. As well you should see them on the masters LAN and also on the masters WAN if it works as expected.

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                CloudNode @viragomann
                last edited by

                @viragomann I also just noticed since i made this NAT mode change from auto to hybrid and also adding the mapping on my backup PF; after the reboot, it reverted back to auto and got rid of the mapping as my master sync'd over. Should i be making this change on my master then?

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                  viragomann @CloudNode
                  last edited by

                  @iptvcld
                  Yes, you can add this rule to the master as well. It won't be used there anyway.

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                    CloudNode @viragomann
                    last edited by

                    @viragomann i did this on the master now and i saw it synced over to the backup. I rebooted the backup again as well.
                    dcb43cb0-d713-43ba-8b64-c9b34c82fc11-image.png

                    I ran a packet capture on the LAN (backup pf) and i see a few of these lines. IP: 76.64.x.x is my wan
                    10:54:16.598225 IP 76.64.x.x > 8.8.8.8: ICMP echo request, id 13920, seq 321, length 9

                    but GW still shows offline
                    cbfaf116-dab6-4bb1-b620-ed5fbda515d0-image.png

                    When i run a ping to 8.8.8.8 using backup, i get this

                    PING 8.8.8.8 (8.8.8.8): 56 data bytes
                    64 bytes from 8.8.8.8: icmp_seq=0 ttl=115 time=2.599 ms

                    --- 8.8.8.8 ping statistics ---
                    3 packets transmitted, 1 packets received, 66.7% packet loss
                    round-trip min/avg/max/stddev = 2.599/2.599/2.599/0.000 ms

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                      viragomann @CloudNode
                      last edited by viragomann

                      @iptvcld said in pfSense HA LAN Interfaces Only:

                      I ran a packet capture on the LAN (backup pf) and i see a few of these lines. IP: 76.64.x.x is my wan
                      10:54:16.598225 IP 76.64.x.x > 8.8.8.8: ICMP echo request, id 13920, seq 321, length 9

                      Even if the WAN cable is disconnected??
                      I was assuming that the WAN is offline, so not clear, why it use the WAN IP.

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                        CloudNode @viragomann
                        last edited by

                        @viragomann That is correct Sir; i do not have my WAN connected to my backup pf right now

                        8288f915-22ad-4cef-a7e2-8a1e05342ff8-image.png

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                          viragomann @CloudNode
                          last edited by

                          @iptvcld
                          Not clear, what's wrong here.
                          As first step for troubleshooting you can remove the monitoring IP from the LAN gateway on the backup. Hence it should monitor the masters LAN and the gateway state should get online.
                          But not sure if the failover will work after.

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                            CloudNode @viragomann
                            last edited by

                            @viragomann I ran a packet cap again and i am seeing those monitoring requests come in as well:

                            11:14:31.073869 IP 8.8.8.8.853 > 192.168.2.81.17018: tcp 0
                            11:14:31.073887 IP 76.64.x.x.11762 > 8.8.8.8.853: tcp 0

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                              CloudNode @viragomann
                              last edited by

                              @viragomann When i remove the monitoring ip from the GW; yes it puts the master LAN IP in there and yes it shows Green and Online but no internet.

                              Ah i really hoped this would have worked out; was such a nice idea to have.

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                                viragomann @CloudNode
                                last edited by

                                @iptvcld said in pfSense HA LAN Interfaces Only:

                                I ran a packet cap again and i am seeing those monitoring requests come in as well:
                                11:14:31.073869 IP 8.8.8.8.853 > 192.168.2.81.17018: tcp 0
                                11:14:31.073887 IP 76.64.x.x.11762 > 8.8.8.8.853: tcp 0

                                So you're using 8.8.8.8 for DNS resolution as well.
                                Possibly that's an issue when you've stated the WAN gateway in System > General Setup.
                                However, when using this IP for gateway monitoring, pfSense will automatically add a static route and point it to the respective gateway. So there might be a conflict.

                                As mentioned above, you can use any other public IP for gateway monitoring which is responding to pings. It might be a good idea, to use another IP.

                                Also you should have a check at System > Advanced > Miscellaneous > State Killing on Gateway Failure.

                                For further testing you can set the WAN gateway as down manually on the backup.

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                                  CloudNode @viragomann
                                  last edited by

                                  @viragomann Correct; i am using 8.8.8.8 and 8.8.4.4 as DNS Res via system > gateway.

                                  I have now changed my GW monitoring IP to 1.1.1.1 on the secondary pf. Also on the secondary pf i have placed a CHECK under System > Advanced > Miscellaneous > State Killing on Gateway Failure.

                                  When i try to ping 8.8.8.8 from the secondary; i get this timeout

                                  PING 8.8.8.8 (8.8.8.8): 56 data bytes
92 bytes from 127.0.0.1: Time to live exceeded
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 263f   0 0000  01  01 0000 127.0.0.1  8.8.8.8 

92 bytes from 127.0.0.1: Time to live exceeded
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 b74f   0 0000  01  01 0000 127.0.0.1  8.8.8.8 

92 bytes from 127.0.0.1: Time to live exceeded
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 66ba   0 0000  01  01 0000 127.0.0.1  8.8.8.8 


--- 8.8.8.8 ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss

                                  I have marked my PPPOE WAN as down on the 2nd pf as well.
                                  This is so bizarre..
                                  I also have just an open rule for LAN
                                  6de4178c-6b2a-4d7d-ad19-2afa3c0c36dc-image.png

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                                    viragomann @CloudNode
                                    last edited by

                                    @iptvcld said in pfSense HA LAN Interfaces Only:

                                    When i try to ping 8.8.8.8 from the secondary; i get this timeout

                                    You cannot use 8.8.8.8 for troubleshooting, since you direct it to WAN gateway.
                                    However, for getting the DNS resolution work on the secondary when the WAN cable is connected to the primary, you should set the gateway to "none" for all DNS servers in System > General Setup.

                                    I have now changed my GW monitoring IP to 1.1.1.1 on the secondary pf.

                                    So try to ping 1.1.1.1 while taking a capture on the LAN interface.

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                                      CloudNode @viragomann
                                      last edited by

                                      @viragomann My master pf DNS settings like like this
                                      c34d0b73-4620-42e5-a695-24d1dc4b5a81-image.png

                                      and secondary pf is the same
                                      f3bcfe38-b3c2-43f3-9bcc-59509a4ac5dd-image.png

                                      When i ping 1.1.1.1 in seconday the packet capture just gave this

                                      12:57:15.477198 IP 192.168.2.81 > 1.1.1.1: ICMP echo request, id 18433, seq 797, length 9
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                                        viragomann @CloudNode
                                        last edited by

                                        @iptvcld said in pfSense HA LAN Interfaces Only:

                                        When i ping 1.1.1.1 in seconday the packet capture just gave this
                                        12:57:15.477198 IP 192.168.2.81 > 1.1.1.1: ICMP echo request, id 18433, seq 797, length 9

                                        You should see the same on the masters LAN. Check that out, please.

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                                          CloudNode @viragomann
                                          last edited by

                                          @viragomann thats correct; i just ran a packet cap on master LAN and then sent a 1.1.1.1 ping from the secondary pf

                                          13:05:44.735976 IP 192.168.2.81 > 1.1.1.1: ICMP echo request, id 18433, seq 1785, length 9
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                                            viragomann @CloudNode
                                            last edited by

                                            @iptvcld
                                            Well, so 1.1.1.1 is routed to the masters LAN address.
                                            Now, if you take a capture on the masters WAN you should also see the ICMP packets to 1.1.1.1, but coming from the WAN IP.

                                            If that's not the case, either the firewall rule or the outbound NAT on the master might failing anyhow.

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