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    Inter VLAN routing

    L2/Switching/VLANs
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    • NogBadTheBadN
      NogBadTheBad
      last edited by

      I meant devices that aren't the router, i.e. PCs on vlan 10 & 20

      Andy

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

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by

        There are zero hits on those rules... Can a device in a vlan even ping pfsense IP in that vlan?

        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 2.7.2, 24.11

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        • S
          sunruh
          last edited by

          Yes, there are other devices showing up in the ARP table from vlan 10 & 20.

          I was able to ping the pfsense IP from each vlan. I just can't seem to ping/communicate from vlan to vlan.

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by

            Local firewalls on the hosts preventing traffic from other subnets?

            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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            • S
              sunruh @Derelict
              last edited by

              @derelict 🤦 yes, that was the issue. Thank you everyone for you help with this!

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by johnpoz

                If you were hitting pfsense trying to go to another vlan, then the allow rules would show hits - or the default deny would log it, etc.

                Do you have rules in your floating tab? Those are evaluated before the interface rules..

                BTW - I stated host firewalls over 4 hours ago ;) heheeh

                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 2.7.2, 24.11

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                • M
                  mke
                  last edited by

                  I have similar issue, 2 vlans, 103 and 203, I was trying to ping from iphone to printer or windows to printer or windows to iphone, no luck. All should be good imho. I even added extra rules to pass traffic between vlans but based you what you have here this is not needed.
                  rules for 103
                  0_1540085778385_Screen Shot 2018-10-20 at 9.35.31 PM.png
                  same logic for 203

                  Diagnostics is a pass, weird

                  0_1540085670478_Screen Shot 2018-10-20 at 9.16.09 PM.png

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                  • DerelictD
                    Derelict LAYER 8 Netgate
                    last edited by Derelict

                    VLAN103 will never see traffic sourced from VLAN203 coming into it. That first rule is useless (note the 0/0 counters there since it's impossible for traffic to match it). If you want 203 to be able to ping 103, put the rule passing that traffic on 203.

                    That ping works because you are sourcing it from the firewall.

                    https://www.netgate.com/docs/pfsense/firewall/firewall-rule-basics.html

                    https://www.netgate.com/docs/pfsense/firewall/firewall-rule-troubleshooting.html

                    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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                    • M
                      mke
                      last edited by

                      Both vlans 103 and 203 have imo correct rules

                      0_1540130805917_Screen Shot 2018-10-21 at 10.05.07 AM.png
                      0_1540130813113_Screen Shot 2018-10-21 at 10.06.36 AM.png

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                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator
                        last edited by johnpoz

                        your forcing traffic out the gateway how can traffic from 1 vlan get to the other vlan - via that gateway your sending it out of.

                        If you want vlan 103 to talk to 203 then you need a rule that allows said traffic before you send traffic out some gateway. On the vlan 103 interface, and vise versa for 203 to talk to 103

                        You also have to be concerned that the device your trying to get to on the other vlan allows access from the source network IPs - ie the devices local firewall if any.

                        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 2.7.2, 24.11

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                        • M
                          mke
                          last edited by

                          @johnpoz said in Inter VLAN routing:

                          If you want vlan 103 to talk to 203 then you need a rule that allows said traffic before you send traffic out some gateway. On the vlan 103 interface, and vise versa for 203 to talk to 103

                          The thing is I don't have internal gateway defined like 10.103.0.1 or 10.203.0.1, all are gateways form public blocks. Can I define internal one and use it then?

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                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator
                            last edited by johnpoz

                            DONT assign a gateway... Just leave it the default * so it can use its internal routing tables.. Which is knows how to get to networks its direcctly attached to, ie the vlan 103 and 203.

                            Create a rule on vlan 103 that says dest vlan203 net and does not assign it a gateway. Put this rule ABOVE the rule where your forcing traffic out that failover gateway.

                            Reverse that for your vlan 203 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 2.7.2, 24.11

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                            • DerelictD
                              Derelict LAYER 8 Netgate
                              last edited by

                              Yeah I didn't notice the policy routing in your rules. Sorry.

                              https://www.netgate.com/docs/pfsense/routing/bypassing-policy-routing.html

                              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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                              • M
                                mke
                                last edited by

                                Sth is hitting the rule but still getting timeouts

                                0_1540315191501_Screen Shot 2018-10-23 at 1.19.37 PM.png
                                0_1540315198139_Screen Shot 2018-10-23 at 1.19.42 PM.png

                                13:16:54.028880 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:54.466404 IP 10.203.8.26 > 10.103.0.12: ICMP echo request, id 1, seq 432, length 40
                                13:16:55.032488 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:56.032418 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:57.032991 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:58.030264 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:59.032380 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:16:59.467559 IP 10.203.8.26 > 10.103.0.12: ICMP echo request, id 1, seq 433, length 40
                                13:17:00.032288 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:17:00.476238 IP 10.203.8.26 > 10.103.0.12: ICMP echo request, id 1, seq 434, length 40
                                13:17:01.032384 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:17:02.032336 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64
                                13:17:03.032353 IP 10.203.0.33 > 10.103.0.12: ICMP echo request, id 30840, seq 30840, length 64

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                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator
                                  last edited by

                                  And does the other end have a firewall? Windows machines for example out of the box will not answer ping from something not on its local network.

                                  Simple do a sniff on the vlan 103 or 203 interface in pfsense when you ping from the other vlan - do you see the request go out.. If so and no response then its the host..

                                  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 2.7.2, 24.11

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                                  • M
                                    mke
                                    last edited by

                                    I am not on site but the ping was tested from iphone to printer and from laptop(windows) to printer also

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                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator
                                      last edited by

                                      Does the printer even have a gateway set... Have seen this too many times to count there the printer does not have gateway set so you can only talk to it from the same network.

                                      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 2.7.2, 24.11

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                                      • M
                                        mke
                                        last edited by

                                        Yes it does have properly gateway, it was manually changed with IP and subnet.
                                        In my case it is carp IP gw 10.103.0.3 .1 is master .2 is slave

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                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator
                                          last edited by

                                          Then I suggest you sniff... This is not any difficult here.. You connect a vlan, you allow it from the other vlan it works.. Sniff sure the ping is being sent/seen on pfsense ingress interface, and validate it going out the egress interface towards the printer. Maybe someone F'd up the mask on the printer or typo's the gateway.

                                          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 2.7.2, 24.11

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                                          • DerelictD
                                            Derelict LAYER 8 Netgate
                                            last edited by

                                            Diagnostics > Ping Set the source interface to the other VLAN. Ping the printer. PCAP on the printer VLAN.

                                            Pretty much guarantee that you will see the requests going out and no reply so you will need to look at the printer configuration.

                                            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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