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Using pfblockerNG for blocking facebook and google

Scheduled Pinned Locked Moved pfBlockerNG
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  • S
    security_paranoid
    last edited by May 15, 2017, 3:41 PM

    @BBcan177:

    To block DNS resolution to those domains, you can add them to a DNSBL Customlist. If you don't use TLD, then you will need to add all of the subdomains that you want to block… ie: (example.com, www.example.com, www.sub.example.com, sub.example.com )

    To block via IP, you will need to find the ASN number and add that to the IPv4/6 Tabs using the "Whois" Source option.

    Where is the DNSBL customlist ? Please give me a screenshot.

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    • B
      BBcan177 Moderator
      last edited by May 17, 2017, 10:09 PM

      DNSBL FEEDS > Add a new Group ( or use an exising Group) > Scroll to bottom of page and click the "+" to open the DNSBL Custom List.  Click on the Blue InfoBlock Icons for help text.

      "Experience is something you don't get until just after you need it."

      Website: http://pfBlockerNG.com
      Twitter: @BBcan177  #pfBlockerNG
      Reddit: https://www.reddit.com/r/pfBlockerNG/new/

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      • S
        security_paranoid
        last edited by May 18, 2017, 1:56 AM

        @BBcan177:

        DNSBL FEEDS > Add a new Group ( or use an exising Group) > Scroll to bottom of page and click the "+" to open the DNSBL Custom List.  Click on the Blue InfoBlock Icons for help text.

        Thanks a lot for your reply.
        I have added a rule to block Google but its not working. I can still open Google. Please see attachment

        DNSBL.png
        DNSBL.png_thumb

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        • T
          teh g
          last edited by May 18, 2017, 4:02 AM

          You need to add all the variants that Google uses; google.com, www.google.com, subdomain.google.com. etc

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          • S
            security_paranoid
            last edited by May 18, 2017, 4:12 AM

            @teh:

            You need to add all the variants that Google uses; google.com, www.google.com, subdomain.google.com. etc

            I added

            www.google.com
            www.google.co.in
            www.facebook.com
            m.facebook.com
            

            but still I can open Google and Facebook.

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            • B
              BBcan177 Moderator
              last edited by May 19, 2017, 8:43 PM

              Enable the TLD option and run a Force Reload DNSBL which will block all sub-domains.

              "Experience is something you don't get until just after you need it."

              Website: http://pfBlockerNG.com
              Twitter: @BBcan177  #pfBlockerNG
              Reddit: https://www.reddit.com/r/pfBlockerNG/new/

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              • S
                security_paranoid
                last edited by May 20, 2017, 2:55 AM

                @BBcan177:

                Enable the TLD option and run a Force Reload DNSBL which will block all sub-domains.

                Done. Still not blocking. Please see attachment.

                tld.png
                tld.png_thumb
                dnsbl.png
                dnsbl.png_thumb

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                • B
                  BBcan177 Moderator
                  last edited by May 23, 2017, 2:10 PM

                  Just enter

                  google.com
                  facebook.com
                  

                  Then TLD will block all sub-domains… When you enter a sub-domain like "www.facebook.com", it will only block that domain and not any other sub-domain.

                  Will need a Force Reload -DNSBL for the changes to take effect (Plus a clear of your browser cache)

                  "Experience is something you don't get until just after you need it."

                  Website: http://pfBlockerNG.com
                  Twitter: @BBcan177  #pfBlockerNG
                  Reddit: https://www.reddit.com/r/pfBlockerNG/new/

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                  • S
                    security_paranoid
                    last edited by May 24, 2017, 11:25 AM May 24, 2017, 10:26 AM

                    @BBcan177:

                    Just enter

                    google.com
                    facebook.com
                    

                    Then TLD will block all sub-domains… When you enter a sub-domain like "www.facebook.com", it will only block that domain and not any other sub-domain.

                    Will need a Force Reload -DNSBL for the changes to take effect (Plus a clear of your browser cache)

                    Done. Its working. Thanks a lot.

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                    • M
                      motific
                      last edited by May 25, 2017, 4:19 PM

                      It looks like you got there but it depends on what you want to block…  I did a bit of an experiment to block google, really to test their claim that you could choose not to use their services more than anything and the big problem you will have is that you just don't know what sites (that aren't google) rely on their services.  The short version is that you can't, or to do so would be a huge undertaking, certainly beyond a simple block.

                      If you really want to block them you can block their IP range and their dns servers but even I who makes a conscious effort to avoid them, couldn't actually get anything done.  The amount of data that they can mine just from googleapis.com and googlefonts.com for example must be astronomical even if you block the search, ads, and analytics domains.

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                      • S
                        security_paranoid
                        last edited by May 26, 2017, 6:24 AM

                        @motific:

                        It looks like you got there but it depends on what you want to block…  I did a bit of an experiment to block google, really to test their claim that you could choose not to use their services more than anything and the big problem you will have is that you just don't know what sites (that aren't google) rely on their services.  The short version is that you can't, or to do so would be a huge undertaking, certainly beyond a simple block.

                        If you really want to block them you can block their IP range and their dns servers but even I who makes a conscious effort to avoid them, couldn't actually get anything done.  The amount of data that they can mine just from googleapis.com and googlefonts.com for example must be astronomical even if you block the search, ads, and analytics domains.

                        Despite blocking facebook I sill find the Linux's firewall (ufw) blocking 31.13.70.7 which is xx-fbcdn-shv-01-lax3.fbcdn.net. http://31.13.70.7.ipaddress.com/.

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                        • M
                          motific
                          last edited by May 26, 2017, 7:27 AM

                          I sill find the Linux's firewall (ufw) blocking 31.13.70.7

                          Linux has nothing to do with pfSense (and if it did I would stop using it immediately).  What are you trying to achieve and what is (and is not) working?

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                          • S
                            security_paranoid
                            last edited by May 26, 2017, 7:48 AM

                            @motific:

                            I sill find the Linux's firewall (ufw) blocking 31.13.70.7

                            Linux has nothing to do with pfSense (and if it did I would stop using it immediately).  What are you trying to achieve and what is (and is not) working?

                            Read  this thread and you will understand. https://forum.pfsense.org/index.php?topic=129740.0

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                            • M
                              motific
                              last edited by May 26, 2017, 9:10 AM

                              If I read the thread so far correctly, you are in a position that you have added DNS blackholes for facebook.com and google.com, but are unhappy that the domain fbcdn.net and traffic to facebook's IP space are not blocked when you expected them to be.

                              The behaviour you're seeing is correct for the configuration you have so far, if you want other domains blocked (like fbcdn.net) then you need to block them in your list as you have done for the other domains.  Many other domains for both facebook and google will also not be blocked (for example youtube.com even though it is part of google).

                              Even when you block the DNS request pfSense will not stop traffic going to IP addresses directly (for example pinging 31.13.70.7 would still work).  To block traffic entirely you would need to add their domain/AS numbers to IP4 & IP6 lists (Google are AS15169 and facebook are AS32934) and tick the 'domain/AS' box.  I can't remember if you need to include AS prefix as part of the number or not, I'm sure someone will be able to confirm that for you.

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