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    DNS resolution fails

    Scheduled Pinned Locked Moved DHCP and DNS
    15 Posts 5 Posters 1.7k Views
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by

      "i guess it gets blocked by the default-block-rule"

      No the default lan rule is any any… If he had modified that sure that is common problem users pick tcp only, but that wouldn't explain being able to ping.

      If this is a new interface and not the lan which defaults to any any then he would have to create the rules he wants to allow - if so then yup again common for new users to forget to allow for dns.

      If he dns is working in the diagnostic screen of pfsense then you would guess that resolver is working - this is the default out of hte box configuration..

      Simple test from client via dig or nslook should tell you want the client is using and what answer if any getting back.

      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

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      • M
        McFrisch
        last edited by

        I will check later when I am in front of the firewall.

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        • M
          McFrisch
          last edited by

          Thanks for the help.  DNS now resolves.  Here is what I did…

          • Added Firewall Rule for LAN - Action: PASS - Interface: LAN - IPV4+6 - TCP/UDP - Source: Any Port: Any - Dest: Any Port Range 53-53

          • Turned on DNS Resolver - Listen All Interfaces - outgoing: All - System Domain Local Zone Type: Transparent - DNSSEC Enabled - DNS Query Forward: Enabled

          • On System>General Setup> DNS Server:  Set 8.8.8.8 WAN(DHCP) and 8.8.4.4 WAN(DHCP)

          That's the good news.  I get resolution everywhere on the network. 
          Bad News: I can't bring up a web page.  Guessing this means 80 is blocked.  So I tried the setting a rule similar for 80 and 443. It just sits and spins.  I will explore the other sections as this is probably not a topic for this area.

          Thanks all!

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            Dude so you dicked with the default rules?  The default rules on lan are any any..

            Post your lan rules!

            The resolver is on out of the box with dnssec…

            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

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            • M
              McFrisch
              last edited by

              John,
              I only added a rule for port 53, suggested by Birke.  Once I got the DNS resolving I figured I would pose my NAT/Firewall issue in another Section, more related to my issue.  I do appreciate the help!
              Here are my LAN rules, I disabled the port 53 rule as it wasn't necessary.

              LANrules.jpg_thumb
              LANrules.jpg

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              • M
                McFrisch
                last edited by

                In order to test this setup safely, I have internalized the firewall.  I have a single desktop connected to the LAN port of the pfsense box and my internal LAN connected to the WAN port.  Is this acceptable for testing purposes?  I figured if I get this correctly configured, I would be able to connect to the webpage of my current router.

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                • chpalmerC
                  chpalmer
                  last edited by

                  What model of cablemodem?

                  Not one on this list is it?    http://badmodems.com/Forum/app.php/badmodems

                  This is a common issue with systems behind these modems.

                  Triggering snowflakes one by one..
                  Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

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                  • M
                    McFrisch
                    last edited by

                    chpalmer,  It is not on that list.  It is a Cisco DPQ3212 (Cox.net)

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                    • JKnottJ
                      JKnott
                      last edited by

                      I have a Hitron CGN3ACSMR, which is on that list.  It works fine.

                      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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                      • chpalmerC
                        chpalmer
                        last edited by

                        McFrisch- Sorry I think I was trying to answer another post

                        JKnott and anyone else wondering-

                        Anything with an Intel Puma chipset has one of the problems mentioned.  The Puma 6 is the worst.

                        Try this test..  http://www.dslreports.com/tools/puma6

                        Try running this-  https://www.grc.com/dns/benchmark.htm    Let it run for a couple of minutes and look at the tabular data.

                        Puma 6 modems on older firmware will show less than 100% results.  With my system I get 100% easily. I have Motorola MB8600 models all over the place. They are Broadcom chips and work flawlessly.  Ive had a couple of the Puma 6 models in hand and they tested as low as 70%.

                        Puma 6 modems with newer firmware have fixed this particular issue but still have all the other issues mentioned on DSLreports and the badmodems site.  http://badmodems.com/images/DOSABC.gif

                        http://badmodems.com/Fix.htm    Make sure you read and understand the issue.  If having these issues is acceptable to you then to each his own.

                        If you have one of these modems your fooling yourself if you think your not affected.

                        If you have a Puma 6 modem and are having DNS issues then you should look at the modem first.

                        http://www.dslreports.com/forum/r31122204-SB6190-Puma6-TCP-UDP-Network-Latency-Issue-Discussion    Just over 8000 replies.

                        Triggering snowflakes one by one..
                        Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

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                        • M
                          McFrisch
                          last edited by

                          Puma 6 Test
                          21ms : x
                          24ms : x
                          25ms : xx
                          27ms : xxx
                          28ms : xx
                          31ms : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx»
                          32ms : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
                          33ms : xxx
                          34ms : xxxx
                          35ms : x
                          36ms : xxxxx
                          37ms : xxxxxxxx
                          38ms : xxxxxxxxxxx
                          39ms : xxxxxxxxxxxxx
                          40ms : xxxxxxxx
                          41ms : xx
                          42ms : x
                          43ms : xxx
                          45ms : x
                          46ms : x
                          47ms : xxx
                          52ms : x
                          54ms : x
                          62ms : x
                          63ms : xxx
                          64ms : x
                          75ms : x
                          78ms : xx
                          79ms : xx
                          150 - 199ms :xx
                          250 - 299ms :x
                          350 - 399ms :x

                          I think that passes.  I will try the other test and post results. Thanks!

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