Home Forum Support (Workaround/fixed) DNS and other firewall issues

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  • #5299
    Bjorn Roesbeke
    Participant

    When casually checking in on the status of my uradmonitor unit, i saw it’s been offline for nearly a month!
    However, it was running just fine locally.

    After cycling the power, the webinterface showed:
    uRADMonitor 1200003F
    type:1 hw:108 sw:110 SI-29BGradiation:0CPM
    average:0.00CPM
    temperature:9.50C

    voltage:380V (29%)
    uptime:25s
    wdt:22s

    ip:10.16.8.2
    server:0.0.0.0
    http:0

    The “0.0.0.0” was bugging me.

    After a bit of looking around in the logs, i found the issue.
    Even though the unit has access to uradmonitor.com, data.uradmonitor.com and 8.8.8.8, i’ve recently added a line above that one in my firewall configuration explicitly blocking all DNS requests to any server outsite of my network.

    TLDR: Let the device use the DNS server provided via DHCP, do not set it fixed to Google’s DNS servers. Thanks!

    Also: 9.5 °C shown in webinterface but around 2.43 °C on website, the latter being the correct value. What’s going on?
    Also: search function on forum redirects to a page showing the latest blog post.

    #5300
    uRADMonitor
    Keymaster

    Thanks for the excellent suggestions!

    For the temperature, the components in your model A generate some extra heating. The server has a calibration / compensation layer , common across the various hardware models. This layer is adaptive. The correct value is the one returned by the server, this is why I encourage everyone to use the API for data access.

    #5301
    Bjorn Roesbeke
    Participant

    Very well.
    Should’ve been something for me to be aware of.
    As always, thank you for responding.

    #5628
    Bjorn Roesbeke
    Participant

    (can’t edit previous post)
    Another option: add a DNAT rule to your router, changing any request to Google’s DNS servers into one to the local DNS server. The uradmonitor device will be none the wiser.

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