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    Can't ping from GUI, unstable game server connection, gateway monitoring does not work

    Scheduled Pinned Locked Moved General pfSense Questions
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    • stephenw10S Offline
      stephenw10 Netgate Administrator
      last edited by

      Is it actually disabled? What does ifconfig -vvvma show for the WAN?

      AlexanderOFA 1 Reply Last reply Reply Quote 0
      • AlexanderOFA Offline
        AlexanderOF @stephenw10
        last edited by AlexanderOF

        igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        description: Internet
        options=8100b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER>
        capabilities=f53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6>
        ether a0:36:9f:05:1e:a2
        inet6 fe80::a236:9fff:fe05:1ea2%igb0 prefixlen 64 scopeid 0x1
        inet 192.168.100.2 netmask 0xffffff00 broadcast 192.168.100.255
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        supported media:
        media autoselect
        media 1000baseT
        media 1000baseT mediaopt full-duplex
        media 100baseTX mediaopt full-duplex
        media 100baseTX
        media 10baseT/UTP mediaopt full-duplex
        media 10baseT/UTP
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

        Here is the output of the command.

        (Removed igb1 from the post, since you only asked for wan.)

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        • stephenw10S Offline
          stephenw10 Netgate Administrator
          last edited by

          Hmm, yeah that all looks fine.

          If you ping the gateway from something else behind pfSense and capture those packets do they show a bad checksum?

          Hard to explain what you're seeing there...

          Steve

          AlexanderOFA 1 Reply Last reply Reply Quote 0
          • AlexanderOFA Offline
            AlexanderOF @stephenw10
            last edited by

            Seems like it doesn't

            19:32:46.407862 a0:36:9f:05:1e:a2 > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 60933, offset 0, flags [DF], proto ICMP (1), length 84)
            192.168.100.2 > 192.168.100.1: ICMP echo request, id 64834, seq 1, length 64
            19:32:46.408197 0c:b9:12:05:6b:80 > a0:36:9f:05:1e:a2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 39305, offset 0, flags [none], proto ICMP (1), length 84)
            192.168.100.1 > 192.168.100.2: ICMP echo reply, id 64834, seq 1, length 64
            19:32:47.421991 a0:36:9f:05:1e:a2 > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 61047, offset 0, flags [DF], proto ICMP (1), length 84)
            192.168.100.2 > 192.168.100.1: ICMP echo request, id 64834, seq 2, length 64
            19:32:47.422265 0c:b9:12:05:6b:80 > a0:36:9f:05:1e:a2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 39306, offset 0, flags [none], proto ICMP (1), length 84)
            192.168.100.1 > 192.168.100.2: ICMP echo reply, id 64834, seq 2, length 64
            19:32:48.445945 a0:36:9f:05:1e:a2 > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 61302, offset 0, flags [DF], proto ICMP (1), length 84)
            192.168.100.2 > 192.168.100.1: ICMP echo request, id 64834, seq 3, length 64
            19:32:48.446194 0c:b9:12:05:6b:80 > a0:36:9f:05:1e:a2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 39307, offset 0, flags [none], proto ICMP (1), length 84)
            192.168.100.1 > 192.168.100.2: ICMP echo reply, id 64834, seq 3, length 64

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            • stephenw10S Offline
              stephenw10 Netgate Administrator
              last edited by

              Hmm, well there is always the possibility that it is actually a bad checksum, though I've never seen that before. Except that the values it's showing imply it's not able to see a checksum at all:
              wrong icmp cksum ffff

              You tried swapping WAN to a different port?

              AlexanderOFA 1 Reply Last reply Reply Quote 0
              • AlexanderOFA Offline
                AlexanderOF @stephenw10
                last edited by

                I am currently away from my machine, but can try this again when I am there. I think that the last time I tried this it did not work but I will swap them just to make sure

                AlexanderOFA 1 Reply Last reply Reply Quote 0
                • AlexanderOFA Offline
                  AlexanderOF @AlexanderOF
                  last edited by

                  By the way, is there any way I can fix a bad checksum on a card (if my card has a bad checksum)?

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                  • stephenw10S Offline
                    stephenw10 Netgate Administrator
                    last edited by

                    You can (somehow) end up with a bad firmware checksum on the card but that's not the same thing as being unable to read incoming packet checksums.
                    Hard to see what could cause that.

                    AlexanderOFA 2 Replies Last reply Reply Quote 0
                    • AlexanderOFA Offline
                      AlexanderOF @stephenw10
                      last edited by AlexanderOF

                      This post is deleted!
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                      • AlexanderOFA Offline
                        AlexanderOF @stephenw10
                        last edited by

                        I changed the WAN port and i still have the same issue. The WAN port is now the onboard intel lan that my motherboard has.

                        11:10:52.483720 70:85:c2:88:89:5f > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 43: (tos 0x0, ttl 64, id 37908, offset 0, flags [none], proto ICMP (1), length 29)
                        192.168.100.2 > 192.168.100.1: ICMP echo request, id 42553, seq 654, length 9
                        11:10:52.484110 0c:b9:12:05:6b:80 > 70:85:c2:88:89:5f, ethertype IPv4 (0x0800), length 60: (tos 0x0, ttl 64, id 2509, offset 0, flags [none], proto ICMP (1), length 29)

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                        • stephenw10S Offline
                          stephenw10 Netgate Administrator
                          last edited by stephenw10

                          Well it's not showing a checksum error there now. But the firewall still doesn't show ping replies?

                          Assuming that second packet is a reply, I think you missed the last line. Which might still show the error!

                          AlexanderOFA 1 Reply Last reply Reply Quote 0
                          • AlexanderOFA Offline
                            AlexanderOF @stephenw10
                            last edited by

                            Seems like I missed a line...

                            18:39:02.151563 70:85:c2:88:89:5f > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 43: (tos 0x0, ttl 64, id 38915, offset 0, flags [none], proto ICMP (1), length 29)
                            192.168.100.2 > 192.168.100.1: ICMP echo request, id 42553, seq 54235, length 9
                            18:39:02.151878 0c:b9:12:05:6b:80 > 70:85:c2:88:89:5f, ethertype IPv4 (0x0800), length 60: (tos 0x0, ttl 64, id 56090, offset 0, flags [none], proto ICMP (1), length 29)
                            192.168.100.1 > 192.168.100.2: ICMP echo reply, id 42553, seq 54235, length 9 (wrong icmp cksum ffff (->85ea)!)
                            18:39:02.652615 70:85:c2:88:89:5f > 0c:b9:12:05:6b:80, ethertype IPv4 (0x0800), length 43: (tos 0x0, ttl 64, id 12414, offset 0, flags [none], proto ICMP (1), length 29)

                            Sorry about that

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                            • stephenw10S Offline
                              stephenw10 Netgate Administrator
                              last edited by

                              Hmm, Ok so that's a completely different NIC, not on the expansion card?

                              And I assume ifconfig still shows checksum off-loading is disabled?

                              And you cannot ping out to anywhere from the firewall?

                              I'd probably re-install clean at that point just to be sure. A default install with an Intel NIC is close to guaranteed to work. It's hard to see what could be causing that.

                              Steve

                              AlexanderOFA 1 Reply Last reply Reply Quote 0
                              • AlexanderOFA Offline
                                AlexanderOF @stephenw10
                                last edited by AlexanderOF

                                Correct, that NIC is the onboard one, not a port from my i350

                                I tried a clean install before but it did not help with my issue..

                                I can ping from my computer but i cannot ping from PfSense itself...

                                Edit: Here is the config for em0

                                em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
                                description: Internet
                                options=810098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER>
                                capabilities=953d9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,NETMAP>
                                ether 70:85:c2:88:89:5f
                                inet6 fe80::7285:c2ff:fe88:895f%em0 prefixlen 64 scopeid 0x3
                                inet 192.168.100.2 netmask 0xffffff00 broadcast 192.168.100.255
                                media: Ethernet autoselect (1000baseT <full-duplex>)
                                status: active
                                supported media:
                                media autoselect
                                media 1000baseT
                                media 1000baseT mediaopt full-duplex
                                media 100baseTX mediaopt full-duplex
                                media 100baseTX
                                media 10baseT/UTP mediaopt full-duplex
                                media 10baseT/UTP
                                nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

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                                • stephenw10S Offline
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  I mean really we can only conclude that the checksum really is bad and whatever is sending it is for some reason breaking it's own replies but only to the next hop.

                                  Try testing pfSense behind something else perhaps?

                                  Steve

                                  AlexanderOFA 1 Reply Last reply Reply Quote 0
                                  • AlexanderOFA Offline
                                    AlexanderOF @stephenw10
                                    last edited by

                                    If i am correct, i should try testing PfSense with a different router (Instead of my provider's modem/router) ?

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                                    • stephenw10S Offline
                                      stephenw10 Netgate Administrator
                                      last edited by

                                      Yes, if you can. Or better, without the ISP's router at all.

                                      AlexanderOFA 1 Reply Last reply Reply Quote 0
                                      • AlexanderOFA Offline
                                        AlexanderOF @stephenw10
                                        last edited by

                                        So, now I am using a TP-Link Archer D2 as my gateway. Unfortunatelly, my ISP won't let me change modem. I can ping the gateway but cannot ping anything behind it... Oh god....

                                        For example, I cannot ping 1.1.1.1... What a mess....

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                                        • stephenw10S Offline
                                          stephenw10 Netgate Administrator
                                          last edited by

                                          So from TP-Link or from pfSense?

                                          You put the TP-Link in between pfSense and the existing router?

                                          If not can you not use pfSense with the modem directly? So it gets a public IP on it's WAN.

                                          Steve

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                                          • AlexanderOFA Offline
                                            AlexanderOF @stephenw10
                                            last edited by AlexanderOF

                                            From PfSense I am able to ping my TP-Link Router but cannot ping anything else that's connected after my TP-Link router. At monday I will change my modem with a different model that my ISP offered to me, hope that fixes the problems...

                                            I ran a traceroute, PfSense sends the ping and never gets a reply back... Something ain't right

                                            It is really stupid that I have to go though this, because they do QoS on their modem and they won't let me change to another PON modem / router... Other ISPs in my area offer a GPON Terminal and let you hook up whatever router you want, but they do not offer the speeds that i need. Greece's internet ISPs are just terrible. I hope in the next 2 years things get better...

                                            Note: Can't really blame my ISP, I am using a internet connection for home users to host servers. My budget is really tight and I cannot afford to give 52 euro / month for a bridged connection.

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