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Thread: Firefox blocks any site

  1. #1
    Join Date
    Mar 2019
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    14

    Firefox blocks any site

    Please, just installed in an old computer Ubuntu 2011/04. How to fix Firefox so that I can browse the net?

  2. #2
    Join Date
    Oct 2006
    Beans
    56,678

    Re: Firefox blocks any site

    Quote Originally Posted by jayhawker2 View Post
    ...Ubuntu 2011/04...
    What exactly is this ?

  3. #3
    Join Date
    Mar 2009
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    1,982

    Re: Firefox blocks any site

    I'm thinking 11.04.

    If that's the case then there's a switch to systemd between then and now. I think the easiest route would be to backup /home, reinstall a variant of the latest, maybe xubuntu or lubuntu

    Then mount your backup and cherry pick files from it to restore to the new /home.

  4. #4
    Join Date
    Jun 2010
    Location
    London, England
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Firefox blocks any site

    If the OS is indeed Ubuntu 11.04 then Firefox would be at version 3.6. That version of Firefox should load web sites coded with HTML 4 but many websites would have moved on from HTML 4 to HTML 5 and beyond.

    The firefox in Ubuntu 11.04 would not be able to read the markup language that many present day websites are coded with. A web browser can be backwards compatible but not forwards compatible.

    Regards
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  5. #5
    Join Date
    Mar 2009
    Beans
    1,982

    Re: Firefox blocks any site

    Not sure if this applies yet but it could also be related to ciphers supported by the browser.

    Almost every site these days is https. Each browser has a collection of ciphers it knows. Each website has ciphers it supports. When you go to a site the browser tells the site which ciphers it knows,and the site shares the ones it accepts.

    The ciphers that are known to be compromised are blacklisted from websites (meaning up-to-date websites won't accept those ciphers) and browsers are released with new ones.

    If the browser is old enough it won't have ciphers that are acceptable to the web server and the handshake fails.

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