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    WPAD Block Port 80 Rule is blocking all of my traffic

    Scheduled Pinned Locked Moved Cache/Proxy
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    • P
      pfBasic Banned
      last edited by

      OK thanks, the results for that are attached.

      I switched the WebGUI to http for WPAD, and pfSense is the server for the WPAD files.

      [squid -k parse results.txt](/public/imported_attachments/1/squid -k parse results.txt)

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      • KOMK
        KOM
        last edited by

        There appear to be no problems with your squid configuration, according to your output.

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        • P
          pfBasic Banned
          last edited by

          Could it be something wrong with the way pfSense is serving up the WPAD files? Or the way I have it setup?

          The proxy.pac is located in "/usr/local/www/proxy.pac" and is linked to a wpad.dat & wpad.da file in the same directory.

          They all contain the basic configuration:
          function FindProxyForURL(url,host)
          {
          return "PROXY 192.168.1.1:3128";
          }

          It seems weird to me that traffic doesn't show up on squid when a computer is setup to autoconfigure, but it does when I point the computer to the pfSense box manually?

          It also seems weird that clamAV doesn't work on http/s but does on http with an explicit proxy.

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          • KOMK
            KOM
            last edited by

            Looks like you're doing everything right.  I don't know why it doesn't work for you.  I don't run AV on the firewall – too slow and I suspect the defs aren't as up to date as a commercial provider.  Get ClamAV off the firewall and use a decent client AV package, if required.

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            • P
              pfBasic Banned
              last edited by

              I'll do that, it does allow things down. Right now I'm using it as an easy way to see if I'm under squids umbrella.

              Do you know if there's any way for me to check pfsense's file server?

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              • KOMK
                KOM
                last edited by

                Do you know if there's any way for me to check pfsense's file server?

                Eh, what?

                Maybe this might be the issue?

                http://kb.k12usa.com/Knowledgebase/Proxy-Auto-Detect-WPAD-Issues-With-IE-Windows-7

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                • P
                  pfBasic Banned
                  last edited by

                  I'll look into that but I'm getting the same results across several OS's.

                  I was just wondering if there was a way for me to see what's happening when a client requests a WPAD or proxy file from the pfsense box.

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                  • KOMK
                    KOM
                    last edited by

                    I was just wondering if there was a way for me to see what's happening when a client requests a WPAD or proxy file from the pfsense box.

                    Go to console and look at /var/log/nginx.log and nginx-error.log.

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                    • P
                      pfBasic Banned
                      last edited by

                      nginx log is large but a notepadd++ search for "wpad" "proxy" ".pac", etc. returns nothing.

                      nginx error log only has 10 lines:

                      2016/08/23 15:18:46 [error] 29178#100114: send() failed (54: Connection reset by peer)
                      2016/08/23 15:26:53 [alert] 29178#100114: close() socket failed (9: Bad file descriptor)
                      2016/08/25 00:02:41 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:05:56 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:05:56 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:06:33 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:08:24 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:08:24 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:09:36 [error] 32286#100113: send() failed (54: Connection reset by peer)
                      2016/08/25 00:11:06 [error] 32541#100082: send() failed (54: Connection reset by peer)
                      

                      I did find some information that might be useful in chrome though, By going to chrome://net-internals/#proxy and chrome://net-internals/#events I was able to see what's going on in chrome when it requests the files and these are the entries I'm seeing on autoconfigure (when the proxy fails).

                      On the #proxy page I see this:

                      Effective proxy settings
                      
                      Use DIRECT connections.
                      Source: SYSTEM
                      Original proxy settings
                      
                      Auto-detect
                      Source: SYSTEM
                      

                      On the #events page there are thousands of entries but here are the ones that seem relevant:

                      230858: URL_REQUEST
                      http://192.168.1.1/proxy.pac
                      Start Time: 2016-08-25 00:42:56.954
                      
                      t=6927008 [st=  0] +REQUEST_ALIVE  [dt=400]
                      t=6927008 [st=  0]    URL_REQUEST_DELEGATE  [dt=0]
                      t=6927008 [st=  0]   +URL_REQUEST_START_JOB  [dt=400]
                                            --> load_flags = 176 (BYPASS_PROXY | DISABLE_CACHE | DISABLE_CERT_REVOCATION_CHECKING)
                                            --> method = "GET"
                                            --> priority = "LOWEST"
                                            --> url = "http://192.168.1.1/proxy.pac"
                      t=6927008 [st=  0]      URL_REQUEST_DELEGATE  [dt=0]
                      t=6927008 [st=  0]      URL_REQUEST_DELEGATE  [dt=0]
                      t=6927008 [st=  0]     +HTTP_STREAM_REQUEST  [dt=400]
                      t=6927008 [st=  0]        HTTP_STREAM_REQUEST_STARTED_JOB
                                                --> source_dependency = 230859 (HTTP_STREAM_JOB)
                      t=6927408 [st=400]        CANCELLED
                      t=6927408 [st=400]     -HTTP_STREAM_REQUEST
                      t=6927408 [st=400] -REQUEST_ALIVE
                      
                      230864: URL_REQUEST
                      http://wpad/wpad.dat
                      Start Time: 2016-08-25 00:42:57.354
                      
                      t=6927408 [st=    0] +REQUEST_ALIVE  [dt=21039]
                      t=6927409 [st=    1]    URL_REQUEST_DELEGATE  [dt=0]
                      t=6927409 [st=    1]   +URL_REQUEST_START_JOB  [dt=21038]
                                              --> load_flags = 176 (BYPASS_PROXY | DISABLE_CACHE | DISABLE_CERT_REVOCATION_CHECKING)
                                              --> method = "GET"
                                              --> priority = "LOWEST"
                                              --> url = "http://wpad/wpad.dat"
                      t=6927409 [st=    1]      URL_REQUEST_DELEGATE  [dt=0]
                      t=6927409 [st=    1]      URL_REQUEST_DELEGATE  [dt=0]
                      t=6927409 [st=    1]     +HTTP_STREAM_REQUEST  [dt=21038]
                      t=6927409 [st=    1]        HTTP_STREAM_REQUEST_STARTED_JOB
                                                  --> source_dependency = 230865 (HTTP_STREAM_JOB)
                      t=6948447 [st=21039]        HTTP_STREAM_REQUEST_BOUND_TO_JOB
                                                  --> source_dependency = 230865 (HTTP_STREAM_JOB)
                      t=6948447 [st=21039]     -HTTP_STREAM_REQUEST
                      t=6948447 [st=21039]   -URL_REQUEST_START_JOB
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948447 [st=21039]    URL_REQUEST_DELEGATE  [dt=0]
                      t=6948447 [st=21039] -REQUEST_ALIVE
                                            --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      
                      230865: HTTP_STREAM_JOB
                      http://wpad/
                      Start Time: 2016-08-25 00:42:57.355
                      
                      t=6927409 [st=    0] +HTTP_STREAM_JOB  [dt=21038]
                                            --> alternative_service = "Uninitialized :0"
                                            --> original_url = "http://wpad/"
                                            --> priority = "LOWEST"
                                            --> source_dependency = 230864 (URL_REQUEST)
                                            --> url = "http://wpad/"
                      t=6927409 [st=    0]    TCP_CLIENT_SOCKET_POOL_REQUESTED_SOCKET
                                              --> host_and_port = "wpad:80"
                      t=6927409 [st=    0]   +SOCKET_POOL  [dt=21038]
                      t=6948447 [st=21038]      SOCKET_POOL_BOUND_TO_CONNECT_JOB
                                                --> source_dependency = 230866 (CONNECT_JOB)
                      t=6948447 [st=21038]   -SOCKET_POOL
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948447 [st=21038]    HTTP_STREAM_JOB_BOUND_TO_REQUEST
                                              --> source_dependency = 230864 (URL_REQUEST)
                      t=6948447 [st=21038] -HTTP_STREAM_JOB
                      
                      230866: CONNECT_JOB
                      wpad:80
                      Start Time: 2016-08-25 00:42:57.355
                      
                      t=6927409 [st=    0] +SOCKET_POOL_CONNECT_JOB  [dt=21038]
                                            --> group_name = "wpad:80"
                      t=6927409 [st=    0]   +SOCKET_POOL_CONNECT_JOB_CONNECT  [dt=21038]
                      t=6927409 [st=    0]     +HOST_RESOLVER_IMPL_REQUEST  [dt=1]
                                                --> address_family = 0
                                                --> allow_cached_response = false
                                                --> host = "wpad:80"
                                                --> is_speculative = false
                      t=6927409 [st=    0]        HOST_RESOLVER_IMPL_IPV6_REACHABILITY_CHECK
                                                  --> cached = true
                                                  --> ipv6_available = true
                      t=6927409 [st=    0]        HOST_RESOLVER_IMPL_CREATE_JOB
                      t=6927409 [st=    0]        HOST_RESOLVER_IMPL_JOB_ATTACH
                                                  --> source_dependency = 230867 (HOST_RESOLVER_IMPL_JOB)
                      t=6927410 [st=    1]     -HOST_RESOLVER_IMPL_REQUEST
                      t=6948447 [st=21038]   -SOCKET_POOL_CONNECT_JOB_CONNECT
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948447 [st=21038] -SOCKET_POOL_CONNECT_JOB
                      
                      230867: HOST_RESOLVER_IMPL_JOB
                      wpad
                      Start Time: 2016-08-25 00:42:57.355
                      
                      t=6927409 [st=0] +HOST_RESOLVER_IMPL_JOB  [dt=1]
                                        --> host = "wpad"
                                        --> source_dependency = 230866 (CONNECT_JOB)
                      t=6927409 [st=0]    HOST_RESOLVER_IMPL_JOB_STARTED
                      t=6927409 [st=0]   +HOST_RESOLVER_IMPL_PROC_TASK  [dt=1]
                      t=6927409 [st=0]      HOST_RESOLVER_IMPL_ATTEMPT_STARTED
                                            --> attempt_number = 1
                      t=6927409 [st=0]      HOST_RESOLVER_IMPL_JOB_REQUEST_ATTACH
                                            --> priority = "LOWEST"
                                            --> source_dependency = 230866 (CONNECT_JOB)
                      t=6927410 [st=1]      HOST_RESOLVER_IMPL_ATTEMPT_FINISHED
                                            --> attempt_number = 1
                      t=6927410 [st=1]   -HOST_RESOLVER_IMPL_PROC_TASK
                                          --> address_list = ["192.168.1.1:0"]
                      t=6927410 [st=1] -HOST_RESOLVER_IMPL_JOB
                      
                      230868: SOCKET
                      wpad:80
                      Start Time: 2016-08-25 00:42:57.356
                      
                      t=6927410 [st=    0] +SOCKET_ALIVE  [dt=21037]
                                            --> source_dependency = 230866 (CONNECT_JOB)
                      t=6927410 [st=    0]   +TCP_CONNECT  [dt=21037]
                                              --> address_list = ["192.168.1.1:80"]
                      t=6927410 [st=    0]     +TCP_CONNECT_ATTEMPT  [dt=21037]
                                                --> address = "192.168.1.1:80"
                      t=6948447 [st=21037]     -TCP_CONNECT_ATTEMPT
                                                --> os_error = 10060
                      t=6948447 [st=21037]      SOCKET_CLOSED
                      t=6948447 [st=21037]   -TCP_CONNECT
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948447 [st=21037] -SOCKET_ALIVE
                      
                      230869: CONNECT_JOB
                      wpad:80
                      Start Time: 2016-08-25 00:42:57.606
                      
                      t=6927660 [st=    0] +SOCKET_POOL_CONNECT_JOB  [dt=21000]
                                            --> group_name = "wpad:80"
                      t=6927660 [st=    0]    BACKUP_CONNECT_JOB_CREATED
                      t=6927660 [st=    0]   +SOCKET_POOL_CONNECT_JOB_CONNECT  [dt=21000]
                      t=6927660 [st=    0]     +HOST_RESOLVER_IMPL_REQUEST  [dt=0]
                                                --> address_family = 0
                                                --> allow_cached_response = false
                                                --> host = "wpad:80"
                                                --> is_speculative = false
                      t=6927660 [st=    0]        HOST_RESOLVER_IMPL_IPV6_REACHABILITY_CHECK
                                                  --> cached = true
                                                  --> ipv6_available = true
                      t=6927660 [st=    0]        HOST_RESOLVER_IMPL_CREATE_JOB
                      t=6927660 [st=    0]        HOST_RESOLVER_IMPL_JOB_ATTACH
                                                  --> source_dependency = 230870 (HOST_RESOLVER_IMPL_JOB)
                      t=6927660 [st=    0]     -HOST_RESOLVER_IMPL_REQUEST
                      t=6948660 [st=21000]   -SOCKET_POOL_CONNECT_JOB_CONNECT
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948660 [st=21000] -SOCKET_POOL_CONNECT_JOB
                      
                      230870: HOST_RESOLVER_IMPL_JOB
                      wpad
                      Start Time: 2016-08-25 00:42:57.606
                      
                      t=6927660 [st=0] +HOST_RESOLVER_IMPL_JOB  [dt=0]
                                        --> host = "wpad"
                                        --> source_dependency = 230869 (CONNECT_JOB)
                      t=6927660 [st=0]    HOST_RESOLVER_IMPL_JOB_STARTED
                      t=6927660 [st=0]   +HOST_RESOLVER_IMPL_PROC_TASK  [dt=0]
                      t=6927660 [st=0]      HOST_RESOLVER_IMPL_ATTEMPT_STARTED
                                            --> attempt_number = 1
                      t=6927660 [st=0]      HOST_RESOLVER_IMPL_JOB_REQUEST_ATTACH
                                            --> priority = "LOWEST"
                                            --> source_dependency = 230869 (CONNECT_JOB)
                      t=6927660 [st=0]      HOST_RESOLVER_IMPL_ATTEMPT_FINISHED
                                            --> attempt_number = 1
                      t=6927660 [st=0]   -HOST_RESOLVER_IMPL_PROC_TASK
                                          --> address_list = ["192.168.1.1:0"]
                      t=6927660 [st=0] -HOST_RESOLVER_IMPL_JOB
                      
                      230871: SOCKET
                      wpad:80
                      Start Time: 2016-08-25 00:42:57.606
                      
                      t=6927660 [st=    0] +SOCKET_ALIVE  [dt=21000]
                                            --> source_dependency = 230869 (CONNECT_JOB)
                      t=6927660 [st=    0]   +TCP_CONNECT  [dt=21000]
                                              --> address_list = ["192.168.1.1:80"]
                      t=6927660 [st=    0]     +TCP_CONNECT_ATTEMPT  [dt=21000]
                                                --> address = "192.168.1.1:80"
                      t=6948660 [st=21000]     -TCP_CONNECT_ATTEMPT
                                                --> os_error = 10060
                      t=6948660 [st=21000]      SOCKET_CLOSED
                      t=6948660 [st=21000]   -TCP_CONNECT
                                              --> net_error = -118 (ERR_CONNECTION_TIMED_OUT)
                      t=6948660 [st=21000] -SOCKET_ALIVE
                      

                      I'm not really sure what I'm reading here but it looks like the connection is timing out and it retries a few different ways but it never works.

                      Any new guidance based on this?

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                      • KOMK
                        KOM
                        last edited by

                        No idea but perhaps you're having the issue of nginx not being able to serve the files due a MIME type issue?

                        https://forum.pfsense.org/index.php?topic=109190.0

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                        • P
                          pfBasic Banned
                          last edited by

                          Thank you, I did this and it's the closest thing to working squid that I've seen yet. With these changes both lagado and chrome detect the proxy settings.
                          Unfortunately, squid (or at least squidguard) doesn't work.

                          If port 80 is open, then proxy files are transmitted, autoconfigure is completed and lagado and chrome report using the proxy settings. However, everything appears to be bypassing the proxy somehow? Apparently nginx is opening its listening port (nmap reports port 80 on my pfSense box opened by nginx) on my LAN, because with that configuration enabled, port 80 is opened, if I change the listen port, then that port is open (my rules block ports 80 and 443 except in a few specific circumstances). I still don't understand how this is allowing SSL (443 is closed, nginx didn't open it, and nmap doesn't report it opened) but not applying squidguard rules to SSL?

                          If I close port 80 after the proxy file has been downloaded, then it simply destroys the internet connection,

                          I tried forwarding all port 80/443 traffic to 127.0.0.1 on 3128 to force http&/s traffic to squid, but that didn't work either.

                          Any suggestions?

                          At this point I'd also be interested in a way to use shallalist on pfBlockerNG…. pfBNG does everything that I want from squid except shallalist, and it just works with no issues.

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