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    pfSense sends packet as 0.0.0.0

    Scheduled Pinned Locked Moved General pfSense Questions
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    • NogBadTheBadN Offline
      NogBadTheBad
      last edited by NogBadTheBad

      @Topogigio said in pfSense sends packet as 0.0.0.0:

      0.0.0.0"

      You can do a packet capture from pfSense, Diagnostics -> Packet Capture.

      Are they DHCP requests, check out the port number:-

      16:01:03.019810 IP 0.0.0.0.68 > 255.255.255.255.67: UDP, length 300
      16:01:03.020074 IP 172.16.2.1.67 > 172.16.2.41.68: UDP, length 300

      If you change the level of detail you'll see more info like the mac address where the 0.0.0.0 is comming from.

      Andy

      1 x Netgate SG-4860 - 3 x Linksys LGS308P - 1 x Aruba InstantOn AP22

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      • T Offline
        Topogigio @NogBadTheBad
        last edited by

        @NogBadTheBad no: from one window I try to ping 1.1.1.1, on a second window I capture packets with filter=host 1.1.1.1

        What I see is that pfSense is sending ICMP request with 0.0.0.0 as source IP.

        It seems that NAT is not working.
        As workaround I tried to apply a manual NAT mapping rule "from source=any -> NAT with WAN address" and this fix the problem. If the same rule has "this firewall (itself)" as source filter instead of any, it does not work.
        My outgoing NAT mode is Hybrid and automatic rule with "127.0.0.0/8" as source is present.

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        • NogBadTheBadN Offline
          NogBadTheBad
          last edited by

          Does the ping work from pfSense if you say the WAN interface is the source ?

          Andy

          1 x Netgate SG-4860 - 3 x Linksys LGS308P - 1 x Aruba InstantOn AP22

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          • T Offline
            Topogigio @NogBadTheBad
            last edited by

            @NogBadTheBad yes, with this selection works

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            • NogBadTheBadN Offline
              NogBadTheBad
              last edited by

              Should just work out the box with automatic rules.

              You should have your LAN subnets in the automatic rules as well.

              Andy

              1 x Netgate SG-4860 - 3 x Linksys LGS308P - 1 x Aruba InstantOn AP22

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              • T Offline
                Topogigio @NogBadTheBad
                last edited by

                @NogBadTheBad yes, all seems right. But still it does not work.

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                • NogBadTheBadN Offline
                  NogBadTheBad
                  last edited by NogBadTheBad

                  Post a screen shot of your NAT rules and your LAN rules.

                  You can just drag and drop them into the chat window.

                  Andy

                  1 x Netgate SG-4860 - 3 x Linksys LGS308P - 1 x Aruba InstantOn AP22

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                  • T Offline
                    Topogigio @NogBadTheBad
                    last edited by

                    @NogBadTheBad NAT outgoing:

                    nat.jpg

                    The last mapping is what I added as workaround.
                    Previous two are specific rules (working well) for two specific hosts in the LAN that need specific outgoing IP address.

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                    • T Offline
                      Topogigio @NogBadTheBad
                      last edited by

                      @NogBadTheBad rules LAN

                      rules.jpg

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                      • johnpozJ Online
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        Curious why do you have 2 specific IPs in your auto outbound nats? 10.77.36.1 and .5

                        What specific IP of client where you pinging from to 1.1.1.1 when you saw the outbound from 0.0.0.0?

                        And your hybrid, so you have specific vips on your wan?

                        Trying to figure out how your auto rules match up to your networks.. From your rules I see only 2 interfaces. So that would be 2 networks in auto. If it was showing your 2 ipsec, why do you only have 3 there should be 4?? And if the singles are your ipsec? Where is the 3rd range coming from..

                        So yeah a bit confusing...

                        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
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                        • T Offline
                          Topogigio @johnpoz
                          last edited by

                          @johnpoz I was pinging from pfSense itself, not from a client. From clients works.

                          Yes I have some additional VIPs

                          Yes I have two LANs + two IPSECs. LANs are 10.77.32.0/26 and 10.77.32.64/26. 10.77.36.1 and .5 are IPs on the point-to-point IPSEC tunnels. 172.30.98.0/24 is a subnet on the remote side of IPSEC (this is strange, yes).

                          However as I said the problem is not from the connected networks. The problem is only from pfSense itself.

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                          • stephenw10S Offline
                            stephenw10 Netgate Administrator
                            last edited by

                            Can we see an example in a pcap?

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                            • johnpozJ Online
                              johnpoz LAYER 8 Global Moderator
                              last edited by johnpoz

                              @Topogigio said in pfSense sends packet as 0.0.0.0:

                              but is seems having trouble connecting to Internet.

                              In what manner? Are you saying it can not check for updates? Unbound is not working... What is not working.. Other than when you do a manual ping, you say you see source of all zeros? When you don't pick an interface?

                              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 2.8, 24.11

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                              • T Offline
                                Topogigio @johnpoz
                                last edited by

                                @johnpoz I noticed the problem because it was unable to populate the available package list..
                                So I noticed that it was unable to resolve DNS, then that was unable to ping, and so on.
                                After the outpoing NAT rule I added as workaround all started to work.

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                                • johnpozJ Online
                                  johnpoz LAYER 8 Global Moderator
                                  last edited by johnpoz

                                  so when you remove that rule, it doesn't work anymore? Or maybe unbound just had an issue? If you can not resolve.. Did you see dns traffic going out with all zeros as source?

                                  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
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                                  • jimpJ Offline
                                    jimp Rebel Alliance Developer Netgate
                                    last edited by

                                    1. You should never have an outbound NAT rule with a source of any -- fix that before anything else. You are in hybrid mode so it's unnecessary anyhow.
                                    2. Let's see the pcap, or a screenshot of it loaded in wireshark
                                    3. What shows up in Diagnostics > States for the traffic that is sourced as 0.0.0.0?

                                    The last time this happened there was something unusual on the user's setup, though I can't remember what it was. I want to say maybe it was an IPv6-only IPsec VTI instance but I'm probably misremembering.

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                                      Topogigio @johnpoz
                                      last edited by

                                      @johnpoz If I remove that rule, it does not work anymore. If I remove that rule I see traffic (ICMP request for example) from pfSense with 0.0.0.0 as source. Only traffic from pfSense itself, not traffic from other hosts routed through it.

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                                      • T Offline
                                        Topogigio @jimp
                                        last edited by

                                        @jimp

                                        • I know it. I added it as workaround, without that pfSense is unable to contact the world to resolve DNS or download updates.
                                        • sorry, a pcap from where? I have access to pfSense and nothing else on the external side.

                                        From the pfSense:

                                        PING 8.8.8.8 (8.8.8.8): 56 data bytes

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


                                        15:37:32.819751 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 0, length 64
                                        15:37:33.830224 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 1, length 64
                                        15:37:34.840837 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 2, length 64

                                        states: I cannot find anything related to 8.8.8.8


                                        I have IPSEC VTI interfaces, but I'm sure that the problem has started AFTER I configured them (because I required OSPF so I installed the package after the VPNs were connected. However can be something there, I agree. But I cannot understand why and what..

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                                        • stephenw10S Offline
                                          stephenw10 Netgate Administrator
                                          last edited by

                                          No states shown for 0.0.0.0 either?

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                                          • T Offline
                                            Topogigio @stephenw10
                                            last edited by

                                            @stephenw10 sorry, found:

                                            WAN icmp 0.0.0.0:25462 -> 8.8.8.8:25462 0:0 3 / 0 252 B / 0 B

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