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    Guide to filtering web content (http and https) with pfsense 2.3

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    • V
      vielfede
      last edited by

      Just one thing I can not get working:

      Windows 7 updates, W7 detects them, but it's not able to download. I read something about here, but I do not know how to manage it.
      https://wiki.squid-cache.org/SquidFaq/WindowsUpdate#Squid_with_SSL-Bump_and_Windows_Updates

      Anyone with the same problem?
      Solutions? Workarounds?
      Thanks in advance

      1 Reply Last reply Reply Quote 0
      • S
        shan52
        last edited by

        We have lots of laptop and pc, is there an easier way to install the cert for all the devices?

        1 Reply Last reply Reply Quote 0
        • A
          aGeekhere
          last edited by

          I have multiple vlans with different IP addresses

          I do not use vlans so I do not know, sorry

          Why is the difference between Squiguard and OpenDNS?

          Squiguard block content on rules you set on your router (totally private).
          OpenDNS block content on rules you set on their servers (they see all traffic, also can be slower)

          Just one thing I can not get working

          Windows updates (as well as Mac and linux) should all be working, if it is not that you may have missed a step. Check that the WPAD is working and your pc is set to auto configure.
          If it is still not working read though the guide again, it should work.

          We have lots of laptop and pc, is there an easier way to install the cert for all the devices?

          You only have to create a cert of squid when using splice all not for all devices

          Hope this helps

          Never Fear, A Geek is Here!

          1 Reply Last reply Reply Quote 0
          • D
            DerHeldvomErdbeerfeld
            last edited by

            Hi there,

            I just read this guide and also tried a little bit an the most I tried worked. Now I just have some
            questions for better understanding.

            @aGeekHere:

            Guide to filtering web content (http and https) with pfsense 2.3 updated 09 June 2017

            To stop users from bypassing your proxy setup a new firewall lan rule and block port 80 and 443
            IPv4 TCP * * * 80 - 443 * none.
            Save

            If I set it up like this FROM 80 TO 443 (this is what it mean to me 80-443) didnt I block also all ports
            between 80 and 443? Wouldnt it be better to set up two rules or an alias (Firewall/Aliases/Ports)
            for the pot 80 and 443 or did I understood it wrong?

            I also want to use a dual wan configuration, is there something to take care of?

            –-
            greets from Germany

            DerHeldvomErdbeerfeld

            1 Reply Last reply Reply Quote 0
            • A
              aGeekhere
              last edited by

              hi
              1. I created two rules, one for port 80 and one for 443 (I will update this part of the guide)

              2. I do not think squid works on dual wan

              Never Fear, A Geek is Here!

              1 Reply Last reply Reply Quote 0
              • T
                Tecnergy
                last edited by

                Hi, thanks for this guide it has helped me a lot, bear with me pls no bully, I just installed pfsense

                "the wpad will be setup to use port 80 and 443. The transperrent proxy is going to catch every thing that the wpad misses, enable transperrent proxy in squid once you have the wpad setup."

                shouldn't be "the proxy will be setup…"?

                Guide is missing configuration of mime type, I don't know which file to edit. I've read other guides and most of them say something about adding mime types for .da, .dat and .pac (if it's not there already)

                Anyways, my problem is that I cannot download the files so no HTTPS filtering for me. I've made a folder inside www called wpad "www/wpad"
                I cannot reach wpad.mydomain.local/wpad/wpad.da nor any other. Ping to wpad.mydomain.local responds to firewall IP

                It's probably something dumb like a firewall rule but I can't see it.

                -I have changed access to GUI to port 9999 and HTTP
                -squid and squidguard services up
                -with MiTM enabled I can't access HTTPS sites (because no downloading of proxy files I guess)
                -Im running pfblocker too
                -pfsense is my DHCP and DNS server
                -have two WAN (I've read it squid proxy doesn't work with dual wan but it is blocking http OK like this)

                Can you help me to realize whats wrong with the downloading of files for wpad?

                thanks.

                1 Reply Last reply Reply Quote 0
                • T
                  Tecnergy
                  last edited by

                  Hi,

                  I managed to make it work by implementing another recurrent instance of nginx following another guide I found on the internet (I don't know if I'm allowed to post external links so I won't).

                  it seems to be working so far with 2 WAN's in load balance mode and it is filtering both http and https it seems with out MitM.

                  Thanks!

                  1 Reply Last reply Reply Quote 0
                  • J
                    J7529
                    last edited by

                    Hello,

                    Just following the Guide, I am getting a issue where when searching on https i get "This site can't be reached" and when browsing on http I get "The requested URL could not be retrieved" I am only trying to get to Google which is let through!

                    How I am currently setting up is behind a Router/Firewall and we already have a DNS server so I haven't enabled DNS Resolver, would this cause issues?

                    Thanks!

                    1 Reply Last reply Reply Quote 0
                    • M
                      MartinN
                      last edited by

                      @aGeekHere:

                      Go to Services/DNS/Resolver/General Settings
                      in custom option enter

                      server:
                      include: /var/unbound/forecegoogle.conf
                      

                      You have mis-spelled the filename here, which prevents it from being saved by pfSense. Please fix it  8)

                      Thanks for the guide, excellent stuff!

                      1 Reply Last reply Reply Quote 0
                      • A
                        aGeekhere
                        last edited by

                        Fixed spelling

                        Never Fear, A Geek is Here!

                        1 Reply Last reply Reply Quote 0
                        • N
                          nib01
                          last edited by

                          @nib01:

                          I got confused when you say add (blue). Did you mean add (blue) below yellow within the same wpad.da file? or..

                          "Part 3
                          Now we are going to set up a wpad read more here about wpad https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid
                          ssh in to pfsense
                          8
                          cd /
                          create the wpad.da file
                          vi /usr/local/www/wpad.da
                          wq

                          Create two new symbolic link files
                          Code: [Select]
                          ln -s /usr/local/www/wpad.da /usr/local/www/wpad.dat
                          ln -s /usr/local/www/wpad.da /usr/local/www/proxy.pac

                          Then go Diagnostics /Edit File
                          click browse
                          user
                          local
                          www
                          click wpad.da
                          add

                          Code: [Select]
                          function FindProxyForURL(url, host)
                          {
                              if (isPlainHostName(host) ||
                                  shExpMatch(host, "*.local") ||
                                  isInNet(dnsResolve(host), "192.168.1.0",  "255.255.255.0"))
                                  return "DIRECT";

                          return "PROXY 192.168.1.1:3128";
                          }

                          save"

                          1 Reply Last reply Reply Quote 0
                          • A
                            aGeekhere
                            last edited by

                            You have to create 3 files in /usr/local/www/
                            wpad.da
                            wpad.dat
                            proxy.pac

                            Each having this code

                            function FindProxyForURL(url, host) 
                            { 
                                if (isPlainHostName(host) ||
                                    shExpMatch(host, "*.local") ||
                                    isInNet(dnsResolve(host), "192.168.1.0",  "255.255.255.0"))
                                    return "DIRECT";
                            
                                return "PROXY 192.168.1.1:3128";
                            } 
                            

                            Instead of maintaining changes for all 3 files you can create a main file e.g. wpad.da and create a symbolic link for the other 2 files, that way all changes from wpad.da are copied over to the other files.

                            So now you only need to make changes to wpad.da.

                            Never Fear, A Geek is Here!

                            1 Reply Last reply Reply Quote 0
                            • K
                              kpoman
                              last edited by

                              Is there any way to force safesearch (google youtube etc…) if your DNS is on a Windows Server AD but your gateway pfSense is intercepting all http on a squid instance ?

                              1 Reply Last reply Reply Quote 0
                              • A
                                aGeekhere
                                last edited by

                                @kpoman:

                                Is there any way to force safesearch (google youtube etc…) if your DNS is on a Windows Server AD but your gateway pfSense is intercepting all http on a squid instance ?

                                Read the DNS resolver part in the guide and see if you can use that method.

                                Never Fear, A Geek is Here!

                                1 Reply Last reply Reply Quote 0
                                • J
                                  jopeme
                                  last edited by

                                  I see a problem with this option and it is that many of my clients have problems to watch YouTube videos, when they search from Google, since it shows that they are restricted videos and that you have to register.

                                  Click add under Host overrides
                                  Host = www
                                  Domain = youtube.com
                                  IP =  216.239.38.120
                                  Description = youtube
                                  Save
                                  NOTE: Safe search for youtube is not as advanced as google safe search, which results in a lot of safe content be filtered out.

                                  1 Reply Last reply Reply Quote 0
                                  • V
                                    vielfede
                                    last edited by

                                    Hello,
                                    Maybe I missed something, I read the entire topic, but I did not find any post about access url on different port then standard 80/443….
                                    For example if you try to access the following site:

                                    http://fatturazione.comieco.org:82/anagrafica.php

                                    The proxy respond with an error message.
                                    Loooking to the squid log I noticed that when I tried to connect to http://fatturazione.comieco.org:82/ squid tried to connect still to port 80…
                                    To get it work, I inserted an exception  on wpad configuration, something like

                                            if (shExpMatch(url, "http://fatturazione.comieco.org:82/*"))
                                            { return "DIRECT"; }
                                    
                                    

                                    That allows the client to go out straight through the FW on port 82…. and hence now it works...

                                    Indeed I'd like a solution to allow "different ports" work without WPAD exceptions. Otherwise you have to insert an exception for every site not using std port.
                                    I did not notice anyone pointing out this kind of issue... Can I be the only one with this kind of issue?
                                    Thanks in advance.

                                    1 Reply Last reply Reply Quote 1
                                    • A
                                      aGeekhere
                                      last edited by

                                      I am not sure on this, if you use the transparent proxy then that only listens on port 80 and 443 for MITM.

                                      Never Fear, A Geek is Here!

                                      1 Reply Last reply Reply Quote 0
                                      • V
                                        vielfede
                                        last edited by

                                        Finally I found out the solution… (http and https)
                                        https://forum.pfsense.org/index.php?topic=96782.0

                                        1 Reply Last reply Reply Quote 1
                                        • K
                                          KARMA
                                          last edited by

                                          I am trying to block facebook and youtube and some unwanted sites using Squid and SquidGuard filtering but those sites are't blocked. I can still access the blocked sites. Please can any one help me where i went wrong?

                                          1 Reply Last reply Reply Quote 0
                                          • pfrickrollP
                                            pfrickroll
                                            last edited by

                                            This post is deleted!
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