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    Weird Problem

    Scheduled Pinned Locked Moved Firewalling
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    • JKnottJ
      JKnott
      last edited by

      That sounds like an ISP/carrier issue.  If you can reach every (did you really reach every single one?  ;)) web site in your country, it's clear pfSense is doing it's job and sending traffic out to the Internet.

      PfSense running on Qotom mini PC
      i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
      UniFi AC-Lite access point

      I haven't lost my mind. It's around here...somewhere...

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      • Z
        zoro_2009
        last edited by

        Yes, it does sound like an ISP issue, but replacing pfSense with IPCop solves the problem, that just doesn't seem right :/
        I just wanna know if pfSense has some compatibility issues with some hardware if any ?

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by

          you running pfblock and blocking countries?  Pfsense just sends traffic to your gateway (isp) if you can not get somewhere then that is on isp.. Simple sniff on pfsense wan will show you if its sending for example traffic to 8.8.8.8 to your isp.

          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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          • Z
            zoro_2009
            last edited by

            Nope, just a basic fresh setup, no pfblock or any other custom rule in place !
            And, yes, pfSense does send the request out to the modem, which is really weird !

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              Well then you need to call your isp.. They may have you locked down.. Via the pfsense mac being different then when you run it with ipcop… Did you power cycle the modem when you connected the new device

              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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              • Z
                zoro_2009
                last edited by

                @johnpoz:

                Well then you need to call your isp.. They may have you locked down.. Via the pfsense mac being different then when you run it with ipcop… Did you power cycle the modem when you connected the new device

                That can't be, because pfSense is connected to one of the LAN ports of the modem (modem is doing pppoe, not pfSense) !
                And to confuse you more, I've tried this setup:

                Internet  –->  Modem  --->  IPCop  --->  pfSense  --->  Clients

                It resulted in the same problem, being modem and IPCop can't reach 8.8.8.8 but can perfectly reach within country hosted servers !

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                • DerelictD
                  Derelict LAYER 8 Netgate
                  last edited by

                  There is nothing in pfSense that will do that unless you install pfBlockerNG and filter by country, etc.

                  Is it just 8.8.8.8 giving you a problem or is it everything? Can you ping 9.9.9.9 for instance?

                  You might have 8.8.8.8 defined as a DNS server with a gateway set or something which creates a host route out that specific interface for that destination out that specific interface. Setting it as a monitor IP address on a gateway does the same.

                  Packet capture on your WAN for host 8.8.8.8 and ping it. Stop the capture and look. If you see echo requests and no reply, pfSense is sending it and not receiving a reply. Look upstream.

                  If you don't see the echo requests on that interface, you have configured them to be sent someplace else and you will need to figure that out.

                  Chattanooga, Tennessee, USA
                  A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                  DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                  Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                  • Z
                    zoro_2009
                    last edited by

                    @Derelict:

                    There is nothing in pfSense that will do that unless you install pfBlockerNG and filter by country, etc.

                    Is it just 8.8.8.8 giving you a problem or is it everything? Can you ping 9.9.9.9 for instance?

                    You might have 8.8.8.8 defined as a DNS server with a gateway set or something which creates a host route out that specific interface for that destination out that specific interface. Setting it as a monitor IP address on a gateway does the same.

                    Packet capture on your WAN for host 8.8.8.8 and ping it. Stop the capture and look. If you see echo requests and no reply, pfSense is sending it and not receiving a reply. Look upstream.

                    If you don't see the echo requests on that interface, you have configured them to be sent someplace else and you will need to figure that out.

                    Here are some of the details:

                    • The modem is configured with 8.8.8.8 as it's main DNS server

                    • Can't reach anything on the Internet (not just 8.8.8.8 )

                    • Local websites (within my country) works perfectly fine !

                    • When I hook up pfSense, the disconnection problem appears, not just pfSense and clients, but even the modem loses Internet, there is a Diagnostic section in the modem which I can ping hosts, and pinging 8.8.8.8 yields nothing from the modem itself !

                    • I remove pfSense from the network and replace it with IPCop, and everything goes back to normal !

                    Can it be a routing loop ?

                    I am not at work right now, so I don't have the chance to take packet capture, but will do that !

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                    • Z
                      zoro_2009
                      last edited by

                      @Derelict:

                      There is nothing in pfSense that will do that unless you install pfBlockerNG and filter by country, etc.

                      Is it just 8.8.8.8 giving you a problem or is it everything? Can you ping 9.9.9.9 for instance?

                      You might have 8.8.8.8 defined as a DNS server with a gateway set or something which creates a host route out that specific interface for that destination out that specific interface. Setting it as a monitor IP address on a gateway does the same.

                      Packet capture on your WAN for host 8.8.8.8 and ping it. Stop the capture and look. If you see echo requests and no reply, pfSense is sending it and not receiving a reply. Look upstream.

                      If you don't see the echo requests on that interface, you have configured them to be sent someplace else and you will need to figure that out.

                      can you please elaborate on this, as my guts are telling me the issue is coming from that

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                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        can you please elaborate on this, as my guts are telling me the issue is coming from that

                        If that was the problem it would only affect the specific addresses you have /32 routes for, not "everything outside your country" as you assert.

                        Post the output from Diagnostics > Command Prompt. Execute this: netstat -rn

                        Chattanooga, Tennessee, USA
                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                        • Z
                          zoro_2009
                          last edited by

                          @Derelict:

                          can you please elaborate on this, as my guts are telling me the issue is coming from that

                          If that was the problem it would only affect the specific addresses you have /32 routes for, not "everything outside your country" as you assert.

                          Post the output from Diagnostics > Command Prompt. Execute this: netstat -rn

                          Ok, will do tomorrow at work, thanks !

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                          • Z
                            zoro_2009
                            last edited by

                            Hello, per your request, here is the result of netstat -rn

                            [code]Routing tables
                            
                            Internet:
                            Destination        Gateway            Flags     Netif Expire
                            default            192.168.1.1        UGS         re0
                            127.0.0.1          link#3             UH          lo0
                            172.17.10.0/24     link#2             U           rl0
                            172.17.10.1        link#2             UHS         lo0
                            192.168.1.0/24     link#1             U           re0
                            192.168.1.50       link#1             UHS         lo0[/code]
                            
                            [i]172.17.10.0/24[/i] is the LAN's side and [i]192.168.1.0/24[/i] is the WAN's side hooked to the modem's LAN port !
                            
                            (no IPv6 in place)
                            
                            Thanks !
                            
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                            • DerelictD
                              Derelict LAYER 8 Netgate
                              last edited by

                              Nothing interesting there.

                              Chattanooga, Tennessee, USA
                              A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                              DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                              Do Not Chat For Help! NO_WAN_EGRESS(TM)

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