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    Squid random disconnects random webpages

    Scheduled Pinned Locked Moved pfSense Packages
    31 Posts 3 Posters 4.4k Views 2 Watching
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    • L Offline
      La6er
      last edited by

      currently the main issue looks to be sites related to google, but sometimes if I wait just a few minutes without doing anything they work after I refresh

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      • KOMK Online
        KOM
        last edited by

        A 409 is a conflict. Strange. I don't have a definitive answer for you but start by Googling 'squid 409 conflict err_ssl_protocol_error'

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        • L Offline
          La6er
          last edited by

          I have, I disabled 2 different things on my browsers, and so far looks stable, but it means I have to do that on over a 1000 pcs

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          • KOMK Online
            KOM
            last edited by

            Does the problem occur when the proxy is running in explicit mode? I've always hated transparent mode for the issues it has always caused me. Explicit + WPAD has worked for me for years now.

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            • L Offline
              La6er
              last edited by

              I indeed have it configured using transparent mode, everytime I tried using WPAD it does not let me download the files on the browser so I asummed it is not working properly in that way

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              • KOMK Online
                KOM
                last edited by

                The wpad.dat and proxy.pac files must reside on an HTTP server, not HTTPS. They must have correct contents. Clients on your network must be able to resolve wpad.your.domain.

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                • L Offline
                  La6er
                  last edited by

                  what if my computer does not have any domain? I have set the files on another pfsense solution with the following script

                  function FindProxyForURL(url,host)
                  {
                  return "PROXY 10.30.251.61:3128";
                  }

                  they are located on usr/local/www/ but if I set autodetect proxy it does not work, if I set manually http://10.30.251.59/proxy.pac (which is the ip of my http pfsense) on my browser it does not work, however if i set manually the proxy conf on the browser it works perfectly, I have set a host override on my dns resolver, and I am also using static ips on my clients

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                  • KOMK Online
                    KOM
                    last edited by

                    WPAD relies on DNS having an entry for wpad on the default domain. I believe you can use a workgroup in place of a domain if you're using Windows clients. I haven't tried it but if you truly have no domain nor workgroup, you could still create an A record for wpad on your DNS and point it to pfSense LAN IP.

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                    • L Offline
                      La6er
                      last edited by

                      lets asume that is working properly.... my browser behavior will be... ask for the file, go to 10.30.251.59/proxy.pac and then overwrite it's own configuration with the proxy info I have set, correct? in this case 10.30.251.61:3128... in order to test if this is working I need to go to http://10.30.251.59/proxy.pac on my browser and a file should start downloading, correct? if that is the case I am not able to acomplish it, for some reason I am no able to download the file

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                      • KOMK Online
                        KOM
                        last edited by

                        Yes to all. What error do you get when you try to download the wpad file?

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                        • L Offline
                          La6er
                          last edited by

                          0_1542142504026_7aa2bb21-b113-4298-bd67-2195aef06493-imagen.png

                          this is the error

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                          • L Offline
                            La6er
                            last edited by

                            I have static IPs on my clients...

                            is this script correct?

                            function FindProxyForURL(url,host)
                            {
                            return "PROXY 10.30.251.61:3128";
                            }

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                            • KOMK Online
                              KOM
                              last edited by

                              Perhaps you should figure out why your web server at 10.30.251.59 isn't responding.

                              Yes, your wpad.dat is correct, but it will force the proxy even for local connections. I use:

                              function FindProxyForURL(url,host)
                              {
                              // If the requested website is hosted within the internal network, send direct.
                                  if (isPlainHostName(host) ||
                                      shExpMatch(host, "*.local") ||
                                      isInNet(dnsResolve(host), "10.0.0.0", "255.0.0.0") ||
                                      isInNet(dnsResolve(host), "172.16.0.0",  "255.240.0.0") ||
                                      isInNet(dnsResolve(host), "192.168.0.0",  "255.255.0.0") ||
                                      isInNet(dnsResolve(host), "127.0.0.0", "255.255.255.0"))
                                      return "DIRECT";
                              // Else use the proxy
                                  return "PROXY 10.10.4.1:3128";
                              }
                              
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                              • L Offline
                                La6er
                                last edited by

                                Thanks for all your help, I created a second instance of the nginx using this guide https://nguvu.org/pfsense/pfSense-2.3-WPAD-PAC-proxy-configuration-guide/

                                Everything related to nagivations seems to be working perfectly fine now...

                                but I have another tiny issue, when using the proxy mi clients are not able to use nat rules set on the firewall... as soon as I stop the squid they work perfectly, any ideas about this?

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                                • KOMK Online
                                  KOM
                                  last edited by

                                  Not off the top of my head with no detail about your config.

                                  Try posting a new topic for that issue.

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                                  • L Offline
                                    La6er
                                    last edited by

                                    alright, will do, thanks a lot for your support on this, I really appreciate it

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