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    Clean Install with pfsense 2.0 using transparent firewall

    Scheduled Pinned Locked Moved Problems Installing or Upgrading pfSense Software
    44 Posts 7 Posters 23.9k Views
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    • V Offline
      verylife78
      last edited by

      It's a public network so nothing can be change.
      My gateway is 10.169.92.1 my DHCP range given from the public network is 10.169.92.1/22 and is executed by an DHCP server inside the company.
      I need to setup pfsense 2.0 with these settings. PLEASE can anybody provide any help? ??? ???
      Lan card is set to 10.169.92.30/22 as already wrote.

      ps with pfsense 1.3 was working fine but the machine broke and we have no support from this person

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      • Cry HavokC Offline
        Cry Havok
        last edited by

        If it worked before then either you weren't using your entire /22 on both interfaces or it was set up as a transparent firewall. You really need to find out how it used to be set up so that we can help you duplicate the configuration.

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        • V Offline
          verylife78
          last edited by

          we were using the entire /22 on both interfaces, infact both cards had the same IP's as they have now.
          but I think it was working as transparent firewall

          ps. on a quest for the truth I have found this http://pfsense.trendchiller.com/transparent_firewall.pdf
          Followed all the steps but no I can't connect pfsense to network because is working hour…so I can't test it now

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          • Cry HavokC Offline
            Cry Havok
            last edited by

            It does sound like it was set as a transparent firewall before, that's the only way that would have worked.

            Do please be aware that that guide you linked to is for a pre-release of V1.0 of pfSense. Things have changed significantly since and following it blindly may cause you major problems.

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            • V Offline
              verylife78
              last edited by

              @Cry:

              It does sound like it was set as a transparent firewall before, that's the only way that would have worked.

              Do please be aware that that guide you linked to is for a pre-release of V1.0 of pfSense. Things have changed significantly since and following it blindly may cause you major problems.

              I found it at the support page, yes things have change but I can't find a newer one. Hope I did the settings correct.

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              • W Offline
                wallabybob
                last edited by

                Is it possible to recover the configuration file from the system that broke?

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                • V Offline
                  verylife78
                  last edited by

                  :( unfortunately no because the system disk crashed
                  @Cry Havok is there a practical guide in order to do the firewall transparent??? and where ?

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                  • Cry HavokC Offline
                    Cry Havok
                    last edited by

                    I assume you've already checked the pfSense documentation? I'd expect that the pfSense book covers it, but otherwise I don't know.

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                    • W Offline
                      wallabybob
                      last edited by

                      Even if your configuration is correct it is not going to be able to do much that is useful while
                      @verylife78:

                      Wan card is sis0 and is LINK DONW state.
                      . . .
                      I tried to connect with the router with normal UTP cable and with an crossover, nothing worked on both cases. (no trafic from pfsense to internet, neither from pc to internet).

                      Is your WAN link still down? Maybe the pfSense WAN interface or the corresponding Cisco interface or the cable between them is broken.

                      @verylife78:

                      It's a public network so nothing can be change.

                      The 10.x.x.x addresses are PRIVATE addresses as far as the Internet is concerned. Maybe that makes a difference in respect to what can be changed.

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                      • V Offline
                        verylife78
                        last edited by

                        @wallabybob
                        You went way back…. with the quote reply
                        WAN card is not at DOWN state since I follow the instructions for the transparent firewall
                        I said public network, maybe I misused the word "public". I know this address 10.xxx.xxx.xxx are private, but we are using this range in the government (public) buildings
                        I have attached the start page in order to understand.
                        Now the only cable that is connected is the one at LAN card, but I have followed the instructions in order to setup the transparent firewall.
                        Hope I made my self clear and sorry for any language mistakes, my native language is Greek.
                        Waiting for an answer.

                        pfsense_start_page.jpg
                        pfsense_start_page.jpg_thumb

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                        • W Offline
                          wallabybob
                          last edited by

                          @verylife78:

                          I said public network, maybe I misused the word "public". I know this address 10.xxx.xxx.xxx are private, but we are using this range in the government (public) buildings

                          It is important to get public/private distinction clear when it comes to deciding how to set the per-interface settings of Block private networks (e.g. Interfaces -> LAN, scroll down to private networks). I presume you have it unchecked. But can you explain why the firewall is blocking the LAN traffic shown in the screen capture of the previous reply?

                          @verylife78:

                          Hope I made my self clear and sorry for any language mistakes, my native language is Greek.

                          Your english is way better than my Greek  :)

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                          • stephenw10S Online
                            stephenw10 Netgate Administrator
                            last edited by

                            I assume it was this guide that you followed?
                            http://pfsense.trendchiller.com/transparent_firewall.pdf

                            Looking at your screen grab I see that your firewall is blocking traffic on LAN all of which is coming from a different subnet. If you have only the default LAN allow rule you will have to edit it or add more rules to allow traffic from a different subnet.

                            What is working at the moment?

                            Steve

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                            • V Offline
                              verylife78
                              last edited by

                              at the moment because we are depending 100% from the web I can't do any tests
                              But last night (now it's morning time) when I plugin the pfsense box, NOTHING pass through, all the internet activity was blocked. But from my pc when I ping the router(gateway) at 10.169.92.1 it reply back, but when I enter a url address at the browser, the page is not loading. Also the network icon (Win7) it has a yellow triangle, no internet connection.
                              Probably some firewall rules block everything.
                              First I need to allow everything in order to work, and then I could start blocking.
                              When I check at the logs everything is blocked.
                              The action that triggered the block action is
                              1. @1 scrub in on xl0 all fragment reassemble
                              2. @1 block drop in log all label "Default deny rule"
                              Which is the default deny rule that applies always?
                              I am attaching 2 images from the rules at WAN and LAN card. One I added my self from the logs

                              pfsense_lan.jpg
                              pfsense_lan.jpg_thumb
                              pfsense_wan.jpg
                              pfsense_wan.jpg_thumb

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                              • Cry HavokC Offline
                                Cry Havok
                                last edited by

                                Please try disabling the 2 blocking rules.

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                                • W Offline
                                  wallabybob
                                  last edited by

                                  @Cry:

                                  Please try disabling the 2 blocking rules.

                                  Do those blocking rules come from enabling Block private networks on the corresponding interface?

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                                  • V Offline
                                    verylife78
                                    last edited by

                                    @CryHavok which 2 blocking do I have to disable?
                                    @wallabybob block private networks is Disable on both LAN and WAN interfaces, because my network is 10.xxx.xxx.xxx, but block bogon networks is Enable.
                                    thanks for the help people. My organization, if the firewall works, will not spend 8.500 euro for a firewall appliance.

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                                    • Cry HavokC Offline
                                      Cry Havok
                                      last edited by

                                      You only have 2 blocking rules - the ones with the red boxes next to them.

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                                      • M Offline
                                        Metu69salemi
                                        last edited by

                                        If you're having bogon network both sides, isn't that against block bogon rules like Cry Havok is trying to say. ???

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                                        • W Offline
                                          wallabybob
                                          last edited by

                                          Recently I read news that all IPv4 addresses had been allocated to regional NICs. That would seem to mean that there are no bogon networks. This suggests that "block bogon networks" might be in untested territory. (I'm not familiar with the internals of the firewall. In a firewall rule "empty set" might have the same representation as "don't care" which, in the displayed rules, would end up blocking everything.)

                                          I suggest you also disable the Block bogon networks and see what happens to your firewall rules, traffic and firewall logs. You will probably also need to reset the firewall states to make sure the rule changes take effect.

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                                          • Cry HavokC Offline
                                            Cry Havok
                                            last edited by

                                            The (as tracked by Team Cymru) bogon list still contains a number of IP ranges, so it isn't empty:

                                            0.0.0.0 255.0.0.0
                                            10.0.0.0 255.0.0.0
                                            127.0.0.0 255.0.0.0
                                            169.254.0.0 255.255.0.0
                                            172.16.0.0 255.240.0.0
                                            192.0.0.0 255.255.255.0
                                            192.0.2.0 255.255.255.0
                                            192.168.0.0 255.255.0.0
                                            198.18.0.0 255.254.0.0
                                            198.51.100.0 255.255.255.0
                                            203.0.113.0 255.255.255.0
                                            224.0.0.0 224.0.0.0

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