Windows 8 and 8.1 Forums


Block specific (sub)domains without editing hosts file

  1. #11


    If you point video.site.com to Localhost or 127.0.0.1 in hosts that should be all that's affected in that domain. Any other site.com should be okay. Is this not what you experience?

      My System SpecsSystem Spec

  2. #12


    127.0.0.1 should only be used for localhost.

    To block hostnames instead use 0.0.0.0

    Using 127.0.0.1 will cause requests on the loopback interface and will need to timeout.
    If you run a webserver or a special proxy locally, you could run into trouble and potentially security problems.

    0.0.0.0 has far better performance, and no chance of something hosted locally slipping into a browser or causing other unintended harm.


    I also recommend setting a dummy hostname at the top of the hosts file for 0.0.0.0 to something like "everywhere".


    Most tools that monitor network connections resolve through the hosts file, and when a process which is listening on all interfaces (most do) is listed in the tool, it will inaccurately report that the process is connected to the top most entry for 0.0.0.0
      My System SpecsSystem Spec

  3. #13


    @hydranix - the 0.0.0.0 trick worked! Thank you so much for that!

    Now when I try to connect to e.g. video.site.com, it's no longer working, while with 127.0.0.1 it somehow worked. This might have been some setting within corporate network / my machine config that was overwritting typical behavior when such settings are recorded.
      My System SpecsSystem Spec

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Block specific (sub)domains without editing hosts file
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