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    VLAN won't communicate with LAN

    Scheduled Pinned Locked Moved L2/Switching/VLANs
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    • D
      DjJoakim @bingo600
      last edited by

      @bingo600 Hmmm so.. I think i celebrated to fast, now - my WIFI don't work unless i disable the block rule "WIFI NET - LOKALA"...
      I don't really know if there is something i am missing here but, on all the other interfaces - it looks the same, and they work just fine, can you see if i am missing something ovious?

      ovi.png

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

        @djjoakim

        With those settings above on wifi & ejfast.
        You have forbidden ANY communication from those net's to ANY other networks in LOKALA.

        So you would only be allowed to go to the internet.

        But ... If you are using the pfSense as DHCP server , you will usually also (via DHCP) get settings to use pfSense as DNS server. And since the pfSense interface (used for DNS) is member of LOKALA , it will reject the DNS queries.

        Try to ping 8.8.8.8 from WiFi , if that works you have access to the internet.
        Try to ping www.google.com , if that doesn't work , and the above 8.8.8.8 did work. Your DNS is prob. not resolving.

        Er det P...Bay du gömmer ifran FRA 😊

        You need to add , above the Deny "net" LOKALA.
        permit TCP/UDP Source WiFi net * Dest WiFi address Dest port range DNS (53)

        But you already saw those tdp/udp 53 blocks .... didn't you ......
        Since you did enable logging on all the DENY lines , as we spoke about.
        Or ... 🤕

        If you tell the firewall to block EVERYTHING to LOKALA it will block EVERYTHING , including DNS requests and NTP and ....

        Technically you should have "Lost" your DHCP too.
        But the pfSense guyzz were nice, and AFAIK. Have permitted DHCP packages in a hidden rule. If you enable the DHCP server on that lan.

        On the pfSense firewall , rules are matched from top and going down until "first match".

        TIP:
        If you use the pfSense as DNS server , you might have a DNS Leak.
        You could use 1.1.1.1 or 8.8.8.8 instead (on the Vlans where you use VPN as exit).
        And then you do not need the : Allow DNS to pfSense interface rule, on that interface.

        /Bingo

        If you find my answer useful - Please give the post a 👍 - "thumbs up"

        pfSense+ 23.05.1 (ZFS)

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

        D 1 Reply Last reply Reply Quote 1
        • D
          DjJoakim @bingo600
          last edited by

          @bingo600 Yeah, that's what i wan't. I don't want the networks to communicate except some of the IP's (hence why i have "Only accept if OK" on LAN)

          That made alot of sence when you said it like that.. bc my DNS servers on pfsense are as below; (From the vpn provider) And just like you say, they get blocked by that rule..

          sense.png

          Haha nej, inget p...bay.. bara väldigt försiktig av mig 😀

          You are awesome man! Now it works, when i added it like you said.. Everything seems so easy for you haha, and when you expain it - it make alot of sense.. I am learning every day that passes!

          Well, as you can see in that image, i did enable the log option, however.. i could't find where it was saving that logs.. under "Firewall" in System logs, i could't find it anywhere.. But i am surly blind.. 🙄

          Yeah, that makes alot of sense.. Surly, on the pic above - the settings are correct this time?

          About you'r tip, i don't wan't any DNS leaks.. So, should i use those DNS servers instead, of the ones i am using now?

          Thank you once again..

          johnpozJ 1 Reply Last reply Reply Quote 0
          • johnpozJ
            johnpoz LAYER 8 Global Moderator @DjJoakim
            last edited by

            @djjoakim That lan net as source on your wifi net is pointless.. In what possible scenario would some lan net address be the source of traffic into your wifi net interface?

            And lets say it was, how would it be sending traffic to wifi address to be routed anywhere, and even if it could - it wouldn't be allowed because the source is not wifi net for your allow rules - and if not explicitly allowed - then default is deny. So there is NO possible case were such a rule would be needed.

            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

            D 1 Reply Last reply Reply Quote 0
            • D
              DjJoakim @johnpoz
              last edited by

              @johnpoz oops… Thanks for that, i simply copied that from the LAN net and apparently forgot to change source from LAN to WIFI…. Thanks for the imput! As you say, it dosen’t make any sense as it is now.

              Thanks

              johnpozJ 1 Reply Last reply Reply Quote 0
              • johnpozJ
                johnpoz LAYER 8 Global Moderator @DjJoakim
                last edited by

                @djjoakim if you change that rule to wifi net still doesn't make any sense - because it would never be evaluated since there is a rule above it that would be and send all traffic out your wan dhcp gateway. Just delete that rule, or change it in such a way that it would be evaluated how you want it to be. With what you posted just changing it to wifi net a source - pointless.

                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

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

                  @johnpoz
                  AFAIK he has set "disable rule when gateway is down" , and the next is to blackhole if the above rule is disabled.

                  If you find my answer useful - Please give the post a 👍 - "thumbs up"

                  pfSense+ 23.05.1 (ZFS)

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

                  1 Reply Last reply Reply Quote 0
                  • D
                    DjJoakim @johnpoz
                    last edited by

                    @johnpoz But haven't i done like it says in here, or am i missunderstanding something?

                    rule.png

                    johnpozJ 1 Reply Last reply Reply Quote 0
                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator @DjJoakim
                      last edited by johnpoz

                      If he set gateway down disable rule - still no traffic allowed because there is no allow rule. What is the point of that block rule? Unless specific do not want to log traffic?

                      Only when that gateway is down?

                      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

                      D 1 Reply Last reply Reply Quote 0
                      • D
                        DjJoakim @johnpoz
                        last edited by DjJoakim

                        @johnpoz I honestly have no idea - i just followed what's said on the Netgate site.
                        @bingo600
                        Sorry for waking this thread up again, but i can't understand what's wrong here.. I have 8 devices under "EJFAST" that works just fine, but one device can't access internet.. Only when i disable my block rule from talking to other networks "LOKALA", internet works for that device (?) So, now when i check the logs i can see it's trying to connect on my LAN with port :53, so just like "WIFI" interface, i added the DNS rule on "EJFAST" interface aswell, but - i still get the same deny in logs, and the device can't access internet.. Any ideas?

                        hmmm.png

                        Thanks!

                        johnpozJ 1 Reply Last reply Reply Quote 0
                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator @DjJoakim
                          last edited by johnpoz

                          @djjoakim well where is your rule that would allow that traffic before you block it.

                          if something is trying to use 192.168.1.1 for dns - and your not allowing it - then no internet not going to work without dns..

                          i just followed what's said on the Netgate site.

                          Where - there is no where on site that says to make pointless rules..

                          Trying to apply a guide without understanding what is actually going on and what the rules actually do is going to lead to nonsense rules that make no sense in whatever setup your trying to do..

                          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

                          D 1 Reply Last reply Reply Quote 0
                          • D
                            DjJoakim @johnpoz
                            last edited by

                            @johnpoz Yes i understand that... but the part i don't understand is that on the interface "WIFI" i added DNS rule, as shown below - and then it worked. But even with this rule added to "EJFAST" it won't work..

                            strange.png

                            Well like i said, i am new to this and trying to learn, so i follow the guides that are available, please correct me if there is something i have misunderstand with this guide.
                            It's impossible to know everything with 1 week of knowledge.

                            1635790242874-rule.png

                            M bingo600B 2 Replies Last reply Reply Quote 0
                            • M
                              MoonKnight @DjJoakim
                              last edited by

                              @djjoakim

                              Not sure, but have to try to add your LAN network address CIDR?

                              d8b16ab0-f734-4baf-a7dc-6711cd33ddb5-image.png

                              --- 24.11 ---
                              Intel(R) Xeon(R) CPU D-1518 @ 2.20GHz
                              Kingston DDR4 2666MHz 16GB ECC
                              2 x HyperX Fury SSD 120GB (ZFS-mirror)
                              2 x Intel i210 (ports)
                              4 x Intel i350 (ports)

                              johnpozJ 1 Reply Last reply Reply Quote 0
                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator @MoonKnight
                                last edited by

                                That would be a kill switch for a vpn connection. Which your using wan dhcp gateway. So makes no sense in this context.

                                Blindly following some guide that makes no sense for what your doing - leads to nonsense rules..

                                You would only need such a rule if you have an allow rule below your policy route rule, if you didn't want that allow rule to be used - then you would need a block rule above the allow rule.

                                You have no ALLOW rule.. So like I said your traffic would be denied by default...

                                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

                                M 1 Reply Last reply Reply Quote 0
                                • M
                                  MoonKnight @johnpoz
                                  last edited by

                                  @johnpoz
                                  yeah, you are right, I was shooing in the blind. Long time since I used OpenVPN. I use WG, and have no problem too accessing different networks locally.

                                  --- 24.11 ---
                                  Intel(R) Xeon(R) CPU D-1518 @ 2.20GHz
                                  Kingston DDR4 2666MHz 16GB ECC
                                  2 x HyperX Fury SSD 120GB (ZFS-mirror)
                                  2 x Intel i210 (ports)
                                  4 x Intel i350 (ports)

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

                                    @djjoakim

                                    Your "deny" log showed that pfSense blocked EJFAST clients , sending DNS packets to 192.168.1.1 (Lan interface)
                                    My guess is that you have set that DNS (LAN) IP in the EJFAST DHCP definitions.

                                    So you either have to remove the entry from the DHCP (then it will default to the connected interface , here EJFAST). .... Preferred.

                                    Or allow DNS from EJFAST net to LAN address

                                    /Bingo

                                    If you find my answer useful - Please give the post a 👍 - "thumbs up"

                                    pfSense+ 23.05.1 (ZFS)

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

                                    D 1 Reply Last reply Reply Quote 1
                                    • D
                                      DjJoakim @bingo600
                                      last edited by

                                      @bingo600 Yep... got it working. Thank you so much again.. :)

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