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[SOLVED] Dual WAN failover, can't access 99% of the websites. Need help

Scheduled Pinned Locked Moved Routing and Multi WAN
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  • P
    pfrickroll
    last edited by pfrickroll Mar 5, 2019, 9:32 PM Mar 4, 2019, 4:03 AM

    So, i set up everything but when I unplug main WAN i can't browse anywhere except netgate forum and 2 websites related to our VOIP services that we pay for.
    I don't have squid set up yet.
    Here are my firewall rules:
    0_1551672032910_1.PNG
    0_1551672053550_2.PNG
    0_1551672062920_3.PNG
    I tried to add port 443 in Floating Rules but didn't make any difference.
    I am not network guru but definitely not noobie; however, certain little things I missed or simply don't understand yet.

    A 1 Reply Last reply Mar 4, 2019, 2:31 PM Reply Quote 0
    • A
      Alex Atkin UK @pfrickroll
      last edited by Alex Atkin UK Mar 4, 2019, 2:34 PM Mar 4, 2019, 2:31 PM

      @pfrickroll Do you have automatic Outbound NAT rules or manual?

      If manual, you have to add permission for the LAN and localhost (for pfSense to do DNS lookups and software updates) for the second WAN connection. Although you shouldn't be able to access anything if that wasn't setup.

      It could be however that if LAN access is enabled but 127.0.0.1 is not, pfSense is somehow using cached DNS results thus why only some sites work.

      You shouldn't need any floating rules as you already directed all LAN traffic over DualWan in the LAN rule

      This is what mine looks like:
      .alt text

      1 Reply Last reply Reply Quote 0
      • P
        pfrickroll
        last edited by pfrickroll Mar 4, 2019, 6:33 PM Mar 4, 2019, 6:33 PM

        all rules are automatic, i didn't set up any. I also disabled DNS forwarder
        0_1551724414057_3.PNG

        A 1 Reply Last reply Mar 4, 2019, 8:52 PM Reply Quote 0
        • A
          Alex Atkin UK @pfrickroll
          last edited by Alex Atkin UK Mar 4, 2019, 8:53 PM Mar 4, 2019, 8:52 PM

          @pfrickroll How are you handling DNS then? Hard coding on every client or using resolver?

          If you use DNS Resolver make sure both WAN interfaces are selected for Outgoing Network Interfaces. It probably has ALL selected as default which is usually fine, depending on if you have any other interfaces that might not be appropriate (I have VPNs for example I don't want DNS going over).

          P 1 Reply Last reply Mar 4, 2019, 9:31 PM Reply Quote 0
          • P
            pfrickroll @Alex Atkin UK
            last edited by Mar 4, 2019, 9:31 PM

            @alex-atkin-uk said in Dual WAN failover, can't access 99% of the websites. Need help:

            @pfrickroll How are you handling DNS then? Hard coding on every client or using resolver?

            If you use DNS Resolver make sure both WAN interfaces are selected for Outgoing Network Interfaces. It probably has ALL selected as default which is usually fine, depending on if you have any other interfaces that might not be appropriate (I have VPNs for example I don't want DNS going over).

            By hard coding, do you mean this?
            0_1551735056173_1.PNG

            Here is my LAN rules, i do have DUALWAN group set up and its in LAN rules as well
            0_1551735096664_2.PNG

            A 1 Reply Last reply Mar 5, 2019, 10:52 AM Reply Quote 0
            • A
              Alex Atkin UK @pfrickroll
              last edited by Mar 5, 2019, 10:52 AM

              @pfrickroll Ah I see, that doesn't stop the rest of the LAN using DNS Forwarder, only pfSense itself. Did you actually want to do that or disable the DNS Forwarder entirely? (not sure why you would do either tbh)

              For starters I'd keep it simple, keep Disable DNS Forwarder ticked, untick DNS Server Override and only have 8.8.8.8 and 8.8.4.4 in the DNS Servers list, so we know only a single reliable provider is being used.

              I got a telling off by Netgate before for mixing DNS providers as it causes inconsistency in DNS lookup results. It usually works fine, but its not recommended.

              P 2 Replies Last reply Mar 5, 2019, 5:51 PM Reply Quote 1
              • P
                pfrickroll @Alex Atkin UK
                last edited by Mar 5, 2019, 5:51 PM

                @alex-atkin-uk So, i left only both Google DNS IPS and still samething. I then enabled DNS forwarder and still nothing. I am not profy yet, when I enable DNS forwarder in services do i have to tick any other options there?

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                • P
                  pfrickroll
                  last edited by Mar 5, 2019, 6:06 PM

                  Also in system > routing should I leave monitor ip blank that will reflect the my comcast/verizon gateways or put there 8.8.8.8 for first gateway and 8.8.4.4 for 2nd?

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                  • P
                    pfrickroll @Alex Atkin UK
                    last edited by Mar 5, 2019, 8:32 PM

                    @alex-atkin-uk So, I enabled DNS forwarder without selecting anything else in the options and then I put monitor IPs for Comcast 8.8.8.8 and for Verizon 8.8.4.4 and everything began working as intended.
                    I also appreciate your time responding to my post and helping me out.

                    1 Reply Last reply Reply Quote 0
                    • G
                      Grimson Banned
                      last edited by Mar 5, 2019, 8:45 PM

                      Read this: https://docs.netgate.com/pfsense/en/latest/book/routing/gateway-settings.html#monitor-ip very carefully and then think about what you are currently doing.

                      P 2 Replies Last reply Mar 5, 2019, 8:49 PM Reply Quote 1
                      • P
                        pfrickroll @Grimson
                        last edited by Mar 5, 2019, 8:49 PM

                        @grimson said in Dual WAN failover, can't access 99% of the websites. Need help:

                        Read this: https://docs.netgate.com/pfsense/en/latest/book/routing/gateway-settings.html#monitor-ip very carefully and then think about what you are currently doing.

                        You mean as of if I am doing something completely wrong and careless?

                        1 Reply Last reply Reply Quote 0
                        • P
                          pfrickroll @Grimson
                          last edited by Mar 5, 2019, 8:58 PM

                          @grimson Ok, I see it now. Lots of things makes sense, thank you.

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