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    Disable IPV6 completely

    Scheduled Pinned Locked Moved Problems Installing or Upgrading pfSense Software
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by johnpoz

      Doesn't matter if you pass it or block it... pfsense isn't going to do anything with it anyway!

      The dest ff00:://8 would include all of that dest traffic!

      Again the best solution is turn off the noise at the source!!

      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

      GertjanG E 2 Replies Last reply Reply Quote 0
      • GertjanG
        Gertjan @johnpoz
        last edited by

        @johnpoz said in Disable IPV6 completely:

        Again the best solution is turn off the noise at the source!!

        Another one might be : locate and obliterate that device that likes so much ports "5353 and 5355 ".

        No "help me" PM's please. Use the forum, the community will thank you.
        Edit : and where are the logs ??

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        • E
          erbalo @johnpoz
          last edited by

          @johnpoz When i want to add this rule it says destination ip is not correct, how did you add that to the rule. I am planning to add this rule on floating and then as block.

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          • NogBadTheBadN
            NogBadTheBad
            last edited by

            Post a screenshot.

            You can drag a screenshot into the reply window.

            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 johnpoz

              As network

              network.jpg

              make sure you tick the quick checkbox! How many interfaces do you have? Its normally a GOOD idea to put the rules directly on the interface... So you don't forget about them when looking at your rules.

              There would be 1 thing if you had 100 interfaces... But when you have a handful, just put the rules directly on the interface!!

              But if you don't want to see any ipv6 noise - prob just make the dest ANY Ipv6 vs the specific multicast destination

              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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              • E
                erbalo
                last edited by

                This post is deleted!
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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by johnpoz

                  Because that is NOT single addres ff00::/8 is a NETWORK!

                  And again its not going to do you any good on floating if you don't tick the quick option!

                  Why would you be picking the WAN interface? Are you seeing ipv6 noise on your wan? That you don't have an IPv6 address on? What sort of noise is that? Post a screenshot of such noise please.

                  And yet again I am going to mention this - you would be better off turning it off at the source of the NOISE!! Disable IPv6 on your windows machines for example... Which I would guess would of been the source of that LLMNR traffic.. Windows loves to have that shit on 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 2.7.2, 24.11

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                  • E
                    erbalo
                    last edited by

                    With this settings the logs are not go on and still coming on.

                    I have searched the source in NTOPng but i can't found which device that is, i don't get a DNS name.

                    5a11e4b9-ce0f-44e8-95a9-634784a6bb7f-afbeelding.png

                    I will also try to put the rule on the interfaces.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      And is what your seeing in the logs to the ff00:: network?

                      What you posted before was.. Your saying your still seeing that? What other rules do you have on floating? So we can see the order.

                      Since you don't want to see IPv6 in your logs, just set the dest to ANY.. vs just multicast..

                      ff02::fb in your log for example is the ipv6 link-local dest multicast address

                      FF02:0:0:0:0:0:0:FB mDNSv6

                      So if your still seeing it logged, you have something other than the default rule logging it. Possible the Block ALL IPv6 rule... What is the description on your log?

                      Turn off the block all IPv6 setting... It's pretty pointless if you don't have any ipv6 setup on your interfaces in the first place, or don't allow IPv6 inf your rules anyway.

                      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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                      • E
                        erbalo
                        last edited by

                        just here are some of logs:
                        dab4d26f-0bde-4033-867a-9402c972c7d4-afbeelding.png

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                        • GertjanG
                          Gertjan
                          last edited by Gertjan

                          When you want to block all incoming IPv6 traffic :

                          854efb59-f29d-4750-9c1c-b069f96c87b6-image.png

                          Note : unchecking this option == blocking UIPv6 activates rule "1000000003" =

                          block in log quick inet6 all tracker 1000000003 label "Block all IPv6"
                          

                          and you have this option set :

                          288933b7-3129-4207-a8b8-6b95544c3f5e-image.png

                          then yeah, your Firewall log will get hail stormed by these '100000003' lines.
                          After all, all your devices on your LAN's are still going to try to use IPv6.

                          So, you get exactly what you are asking ...

                          No "help me" PM's please. Use the forum, the community will thank you.
                          Edit : and where are the logs ??

                          E 1 Reply Last reply Reply Quote 0
                          • E
                            erbalo @Gertjan
                            last edited by

                            @Gertjan

                            Oh just;

                            1. Unceck the Allow IPV6 (it was by me allready unchecked)
                            2. And then using the Command shell run: block in log quick inet6 all tracker 1000000003 label "Block all IPv6
                            3. Go to the Rule 1000000003 and uncheck Log packets

                            Is that correct?

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

                              Your not suppose to run anything in the shell.

                              Your block all IPv6 rule is evaluated before your no log rule.. So stop blocking all IPv6.. and your logs will clear up..

                              With your no log rule..

                              Blocking all IPv6 is pointless if your not allowing it in the first place.. all interfaces have default deny. Unchecking that box is just going to spam your log with all IPv6 traffic that is blocked.

                              Also ZERO point in hiding link-local address space.. But stops us from seeing if that is 1 device or multiple devices. Again the best advice I can give you is turn IPv6 off at the devices themselves if you don't want noise on your network... Your not using IPv6.. So every packet put on the wire is just noise, be you log it or not..

                              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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                              • viktor_gV
                                viktor_g Netgate
                                last edited by

                                also check this: https://redmine.pfsense.org/issues/9837

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                                • GertjanG
                                  Gertjan @erbalo
                                  last edited by Gertjan

                                  @erbalo said in Disable IPV6 completely:

                                  Is that correct?

                                  For one third.

                                  Uncheck - see my image above.
                                  Doing so, this will place a firewall rule '100000003' that block all IPV6 traffioc on all interface. This is what Unchecking "Allow IPV6" does, not more, not less.
                                  To see the firewall rule : Take a look at /tmp/rules.debug

                                  I do not understand what you mean with 2. There is nothing to execute by you.

                                  1. Even less.

                                  Again.

                                  Uncheck this one :

                                  895c1366-807a-409e-8df5-c7fbb7ff4cca-image.png

                                  and hit the bleu Save button at the bottom.
                                  32379db6-544b-4fa5-95ba-935ede0b292d-image.png

                                  Problem solved.

                                  edit : solved .... is relative.
                                  IPv4 is still fading out - IPV6 is the future.
                                  Accepting it, learning it is not some kind of luxury.
                                  If you are selling hair dryer all your live, you might need any IPv6 knowledge.
                                  If you maintain and administer Firewalls ... there is no choice.

                                  No "help me" PM's please. Use the forum, the community will thank you.
                                  Edit : and where are the logs ??

                                  1 Reply Last reply Reply Quote 0
                                  • JKnottJ
                                    JKnott @erbalo
                                    last edited by

                                    @erbalo

                                    If you have IPv6 service, why would you want to block it? What sort of log entries are you getting? Where are they from?

                                    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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                                    • E
                                      erbalo
                                      last edited by

                                      Problem solved,

                                      • I have disabled all of the IP6 devices only one that i can't because it is from the thermostat device, i have no access there.
                                      • I have also created the IPV6 logs with rules as you gives advice but it did'nt works.
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                                      • johnpozJ
                                        johnpoz LAYER 8 Global Moderator
                                        last edited by

                                        @erbalo said in Disable IPV6 completely:

                                        I have also created the IPV6 logs with rules as you gives advice but it did'nt works.

                                        As gone over already if you have pfsense to block all IPv6... This setting unchecked.

                                        unchecked.jpg

                                        It creates a block rule that logs, and no rules you put in place would not log it... because the auto rule that creates is evaluated before any of your rules.

                                        So you either need have that checked and create your own rules that do not log... Or you have to edit the system files so the rule that creates doesn't log.. Which would be horrible idea if you ask me, since now any time you update pfsense that will get put back and your ipv6 traffic would be logged.

                                        I think prob the best thing that could happen is that like you have option to not log default deny rule, you should be able to not log the block IPv6 rule.. You could put in a feature request for that.

                                        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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                                        • E
                                          erbalo @johnpoz
                                          last edited by

                                          @johnpoz Allow IPv6 checked and not receiving any logs as long as now.

                                          I have also another question about autorrule because i have also problem with that pfsense blocking IP adresses for Google Home services.

                                          What i did:

                                          • Whitelisted these IP addresses as Alias and placed on the top of the IOT Vlan.
                                          • Whitelisted www.google.com and google.com on PFblocker.
                                          • PFblockerNG-devel is installed and working also fine, blocking ads etc.

                                          Do i maybe change the ruleorder?

                                          My ruler order is:
                                          Screen Shot 2020-05-22 at 17.34.54.png

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                                          • johnpozJ
                                            johnpoz LAYER 8 Global Moderator
                                            last edited by

                                            Rules are evaluated top down, first rule to trigger wins - no other rules are evaluated.

                                            https://docs.netgate.com/pfsense/en/latest/firewall/firewall-rule-processing-order.html

                                            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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