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    offloading OpenVPN using external gateway

    Scheduled Pinned Locked Moved Routing and Multi WAN
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    • C
      chrispazz @bingo600
      last edited by chrispazz

      @bingo600 said in offloading OpenVPN using external gateway:

      @chrispazz

      But just to summarize :

      You say if you put a PC on the 192.168.5.x lan , and set 192.168.5.99 (RasPI) as def-gw , the PC can use the RasPI & OpenVPN tunnel ok ?

      Yes, correct.

      You have put all desired OPENVPN PC's in a IP HOST Alias
      You made direct host entries in the rule, and made Policy based rules with the RasPI as Gateway , on all the interfaces where a "OPENVPN" PC could be connected ?

      Yes.

      But the pfSense won't match the source ip's, and therefore won't policy route t the RasPI. This is also confirmed by , enabling logging in the Policy rule. And no loglines appear.

      No. The rule is correctly engaged and it is logged in firewall log but it seems to ignore the Raspi used as gateway.

      Q:
      We did a trace (the first one above) , where we succesfully matched a ping to google.it , and you got both loglines , and we saw the policy routing in effect in the pfSense packet trace.

      Currently, using 192.168.5.9 (Raspi gateway) as host, trace display the following when doing a ping to www.google.it:

      19:32:03.251588 IP 192.168.5.1 > 192.168.5.9: ICMP echo request, id 43267, seq 26591, length 9
      19:32:03.252028 IP 192.168.5.9 > 192.168.5.1: ICMP echo reply, id 43267, seq 26591, length 9

      Doing packet trace using google IP as host gives the following:

      19:33:38.627397 IP 192.168.5.1 > 172.217.168.3: ICMP echo request, id 10411, seq 0, length 64
      19:33:38.642607 IP 172.217.168.3 > 192.168.5.1: ICMP echo reply, id 10411, seq 0, length 64

      Was that test also made with the iMAC ?

      The packet tracing is done pinging from Imac to www.google.it

      Q:
      You do use either static IP's or DHCP MAC Lock (Reservation) , in order to ensure that the PC's used for test & OPN always get the same ip ?.

      I have IP reservation for iMac and static IP for Pfsense.

      Just to give you more confirmation about the rule catched, consider that without that new rule, the connection has to go via the pfsense VPN client.
      If I deactivate the rule, the connection go with pfsense VPN client. if I enable the rule, the connection exit with ISP gateway (no raspi VPN).

      bingo600B 1 Reply Last reply Reply Quote 0
      • bingo600B
        bingo600 @chrispazz
        last edited by

        @chrispazz said in offloading OpenVPN using external gateway:
        packet trace.

        Currently, using 192.168.5.9 (Raspi gateway) as host, trace display the following when doing a ping to www.google.it:

        What does that mean ?
        Currently, using 192.168.5.9 (Raspi gateway) as host

        Wasnt the RasPI 192.168.5.99 ?

        What does as host mean (you mean you ping the raspi) ?

        The below 2 traces both show a req & a reply

        19:32:03.251588 IP 192.168.5.1 > 192.168.5.9: ICMP echo request, id 43267, seq 26591, length 9
        19:32:03.252028 IP 192.168.5.9 > 192.168.5.1: ICMP echo reply, id 43267, seq 26591, length 9

        Doing packet trace using google IP as host gives the following:

        19:33:38.627397 IP 192.168.5.1 > 172.217.168.3: ICMP echo request, id 10411, seq 0, length 64
        19:33:38.642607 IP 172.217.168.3 > 192.168.5.1: ICMP echo reply, id 10411, seq 0, length 64

        In the Packet capture try to set detail to high or full

        2cedcbc3-da8f-40b9-92a1-e384cc29ec8f-image.png

        We need to see the mac addresses in those packets.

        And compare to the RasPI mac address

        If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

        pfSense+ 23.05.1 (ZFS)

        QOTOM-Q355G4 Quad Lan.
        CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
        LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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        • C
          chrispazz @bingo600
          last edited by

          @bingo600 said in offloading OpenVPN using external gateway:

          What does as host mean (you mean you ping the raspi) ?

          HOST is the captured Host address

          We need to see the mac addresses in those packets.

          b8:27:eb:8e:00:43 is Raspi MAC Address
          02:11:32:25:4e:f9 is pfsense WAN interface

          Full detailed trace is the following:

          192.168.5.1 > 192.168.5.99: ICMP echo request, id 43267, seq 28884, length 9
          19:51:42.213831 b8:27:eb:8e:00:43 > 02:11:32:25:4e:f9, ethertype IPv4 (0x0800), length 60: (tos 0x0, ttl 64, id 59852, offset 0, flags [none], proto ICMP (1), length 29)
          192.168.5.99 > 192.168.5.1: ICMP echo reply, id 43267, seq 28884, length 9
          19:51:42.723672 02:11:32:25:4e:f9 > b8:27:eb:8e:00:43, ethertype IPv4 (0x0800), length 43: (tos 0x0, ttl 64, id 65165, offset 0, flags [none], proto ICMP (1), length 29)

          bingo600B 2 Replies Last reply Reply Quote 0
          • bingo600B
            bingo600 @chrispazz
            last edited by bingo600

            @chrispazz

            Now do the same trace with the google ip as the destination

            Your iMAC isn't multihomed ?
            I mean both cable & WiFi

            If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

            pfSense+ 23.05.1 (ZFS)

            QOTOM-Q355G4 Quad Lan.
            CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
            LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

            C 1 Reply Last reply Reply Quote 0
            • C
              chrispazz @bingo600
              last edited by chrispazz

              @bingo600 here it is:

              192.168.5.1 > 216.58.215.227: ICMP echo request, id 61288, seq 0, length 64
              20:09:20.262578 dc:39:6f:f2:4d:e4 > 02:11:32:25:4e:f9, ethertype IPv4 (0x0800), length 98: (tos 0x60, ttl 113, id 0, offset 0, flags [none], proto ICMP (1), length 84)
              216.58.215.227 > 192.168.5.1: ICMP echo reply, id 61288, seq 0, length 64
              20:09:21.238644 02:11:32:25:4e:f9 > dc:39:6f:f2:4d:e4, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 58651, offset 0, flags [none], proto ICMP (1), length 84)

              Trying to understand who is dc:39:6f:f2:4d:e4....

              Currently iMac is connected only with wifi so no multiple ip

              bingo600B 1 Reply Last reply Reply Quote 0
              • bingo600B
                bingo600 @chrispazz
                last edited by

                @chrispazz said in offloading OpenVPN using external gateway:

                Trying to understand who is dc:39:6f:f2:4d:e4....

                My money is on the ISP router 5.254

                pfSense Diagnostic -> arp table will reveal

                If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                pfSense+ 23.05.1 (ZFS)

                QOTOM-Q355G4 Quad Lan.
                CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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                • C
                  chrispazz @bingo600
                  last edited by

                  @bingo600 you are right!

                  bingo600B 1 Reply Last reply Reply Quote 0
                  • bingo600B
                    bingo600 @chrispazz
                    last edited by

                    @chrispazz

                    In the capture , strange it matched ....
                    didn't you set 192.168.5.99 as ip match ?

                    If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                    pfSense+ 23.05.1 (ZFS)

                    QOTOM-Q355G4 Quad Lan.
                    CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                    LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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                    • C
                      chrispazz @bingo600
                      last edited by

                      @bingo600 latest try was with google IP as you asked....am I wrong?

                      1 Reply Last reply Reply Quote 0
                      • bingo600B
                        bingo600 @chrispazz
                        last edited by

                        @chrispazz said in offloading OpenVPN using external gateway:

                        @bingo600 said in offloading OpenVPN using external gateway:

                        What does as host mean (you mean you ping the raspi) ?

                        HOST is the captured Host address

                        We need to see the mac addresses in those packets.

                        b8:27:eb:8e:00:43 is Raspi MAC Address
                        02:11:32:25:4e:f9 is pfsense WAN interface

                        Full detailed trace is the following:

                        192.168.5.1 > 192.168.5.99: ICMP echo request, id 43267, seq 28884, length 9
                        19:51:42.213831 b8:27:eb:8e:00:43 > 02:11:32:25:4e:f9, ethertype IPv4 (0x0800), length 60: (tos 0x0, ttl 64, id 59852, offset 0, flags [none], proto ICMP (1), length 29)
                        192.168.5.99 > 192.168.5.1: ICMP echo reply, id 43267, seq 28884, length 9
                        19:51:42.723672 02:11:32:25:4e:f9 > b8:27:eb:8e:00:43, ethertype IPv4 (0x0800), length 43: (tos 0x0, ttl 64, id 65165, offset 0, flags [none], proto ICMP (1), length 29)

                        What command did you use on the iMAC to make this trace , where it goes to the Raspi (but raspi as destination)

                        If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                        pfSense+ 23.05.1 (ZFS)

                        QOTOM-Q355G4 Quad Lan.
                        CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                        LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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                        • C
                          chrispazz @bingo600
                          last edited by

                          @bingo600 only "ping www.google.it".

                          But in first trace I used the raspi as Host capture.

                          C bingo600B 2 Replies Last reply Reply Quote 0
                          • C
                            chrispazz @chrispazz
                            last edited by chrispazz

                            Ok this is interesting:

                            I added a floating rule with no filters but "out" direction and in advanced settings with the Raspi Gateway.

                            With this, the connection go correctly thru the Raspi VPN.

                            So, the external gateway thur pfsense is working correctly.
                            I have to understand why when using a firewall rule in a specific interface is not using Raspi gateway

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                            • bingo600B
                              bingo600 @chrispazz
                              last edited by bingo600

                              @chrispazz
                              I don't think the first capture is showing the : ping www.google.it
                              I think something is pinging the Raspi ... And it's prob the gw-monitor.
                              I was fooled there

                              It was my mistake concluding the policy route was working, in the first trace we saw.

                              A working policy route package would be like the last one you made (google ip)
                              but with the RasPI MAC instead of the ISP-Router MAC

                              So at the moment pfSense policy routing is NOT working as intended

                              If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                              pfSense+ 23.05.1 (ZFS)

                              QOTOM-Q355G4 Quad Lan.
                              CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                              LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

                              C 1 Reply Last reply Reply Quote 0
                              • C
                                chrispazz @bingo600
                                last edited by chrispazz

                                @bingo600 Yes but the rules is matched because it is logged in the pfsense firewall log.
                                It only is ignoring the gateway in advanced settings....
                                The same rule in "floating" mode is working...

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                                • C
                                  chrispazz @chrispazz
                                  last edited by

                                  This is really strange, now again the floating rule is not working.
                                  I will try to reboot pfsense....

                                  bingo600B 1 Reply Last reply Reply Quote 0
                                  • bingo600B
                                    bingo600 @chrispazz
                                    last edited by

                                    @chrispazz said in offloading OpenVPN using external gateway:

                                    This is really strange, now again the floating rule is not working.
                                    I will try to reboot pfsense....

                                    Noooooo
                                    Don't say you're using floating rules , i asked about that

                                    If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                                    pfSense+ 23.05.1 (ZFS)

                                    QOTOM-Q355G4 Quad Lan.
                                    CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                                    LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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                                    • C
                                      chrispazz @bingo600
                                      last edited by

                                      @bingo600
                                      I was NOT using floating rules at all.

                                      I tried now to see the same rule in floating mode if it works with raspi gateway or not and with floating IT IS working.....

                                      Why in floating mode use the specified gateway and in normal not floating mode ignores it?

                                      C bingo600B 2 Replies Last reply Reply Quote 0
                                      • C
                                        chrispazz @chrispazz
                                        last edited by chrispazz

                                        This post is deleted!
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                                        • bingo600B
                                          bingo600 @chrispazz
                                          last edited by

                                          @chrispazz

                                          It shouldn't
                                          But AFAIK floating rules are always parsed first.

                                          If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                                          pfSense+ 23.05.1 (ZFS)

                                          QOTOM-Q355G4 Quad Lan.
                                          CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                                          LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

                                          C 1 Reply Last reply Reply Quote 0
                                          • C
                                            chrispazz @bingo600
                                            last edited by

                                            @bingo600 Should I open a bug in pfsense? 😧

                                            bingo600B 1 Reply Last reply Reply Quote 0
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