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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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    • 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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                                • stephenw10S Offline
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  Subnet conflict maybe? They need to be using unique subnets between each router.

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

                                    I don't think there is a Subnet Conflict

                                    Here are the subnets

                                    Modem: 192.168.100.1
                                    TP-Link: 192.168.200.1
                                    Pfsense: 192.168.2.1, 192.168.3.1

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                                    • stephenw10S Offline
                                      stephenw10 Netgate Administrator
                                      last edited by

                                      That should be fine.

                                      So effectively the same as before?

                                      Can clients behind pfSense ping further?

                                      Typically when pfSense can only ping it's gateway it's because it has a bad default route. Check the routing table in Diag > Routes, make sure the TPLink is the default route.

                                      Steve

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                                      • AlexanderOFA Offline
                                        AlexanderOF @stephenw10
                                        last edited by

                                        Seems like it's default route is TPLink

                                        Same as before, clients can ping further

                                        I'll get my modem changed today, we will see the results after that. Hope that's the issue.

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                                        • AlexanderOFA Offline
                                          AlexanderOF
                                          last edited by

                                          So great news! After I changed my modem / router, everything works as it should! Seems like my ISPs modem is garbage. Now for some reason players are experiencing really high latency, but if I remember correctly, that's only a problem with the onboard NIC.

                                          Thanks a lot for the help :)

                                          • Alexander
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                                          • stephenw10S Offline
                                            stephenw10 Netgate Administrator
                                            last edited by

                                            Nice. That's some weird behaviour.

                                            Steve

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