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    Android saying "Connected, no Internet"

    Scheduled Pinned Locked Moved Firewalling
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    • S Offline
      Solway
      last edited by Solway

      Just configured Pfsense firewall

      disabled the "allow all on LAN"

      only have the following ports allowed to go through from LAN to internet (any)

      DNS 53, NTP 123, HTTP/s 80/443, SMTPS 465, IMAPS 993
      &
      ICMP Echoreg for pings

      all else is blocked by default

      My access point is pointing to my server (DNS,NTP,DHCP) and gateway (pfsense box)

      However, Android is saying "Connected, no Internet". also happens on iphone
      Is there any other ports to make this work?

      "allow all on LAN" - makes this problem go away....

      JKnottJ 1 Reply Last reply Reply Quote 0
      • JKnottJ Offline
        JKnott @Solway
        last edited by

        @Solway

        Why are you trying to block so much? If you must do that, fire up Packet Capture, to see what's happening.

        PfSense running on Qotom mini PC
        i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
        UniFi AC-Lite access point

        I haven't lost my mind. It's around here...somewhere...

        1 Reply Last reply Reply Quote 1
        • JeGrJ Offline
          JeGr LAYER 8 Moderator
          last edited by

          Or just have a look into the logs, find out your Android's IP and filter them and check, which ones got blocked.

          Don't forget to upvote 👍 those who kindly offered their time and brainpower to help you!

          If you're interested, I'm available to discuss details of German-speaking paid support (for companies) if needed.

          1 Reply Last reply Reply Quote 0
          • S Offline
            Solway
            last edited by

            im just locking down LAN so i know whats going outbound

            its quiet random ports from phone..

            like for example. ive just done a packet capture on my phone. turned off wifi, then back on.

            15:17:15.203757 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 0
15:17:15.203799 IP 10.1.1.20.47438 > 172.217.169.67.80: tcp 0
15:17:15.217647 IP 172.217.169.67.80 > 10.1.1.20.47438: tcp 0
15:17:15.217661 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 0
15:17:15.517409 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 0
15:17:15.517425 IP 172.217.169.67.80 > 10.1.1.20.47438: tcp 0
15:17:15.663620 IP 10.1.1.20.47438 > 172.217.169.67.80: tcp 0
15:17:15.663643 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 0
15:17:15.663667 IP 10.1.1.20.47438 > 172.217.169.67.80: tcp 232
15:17:15.663807 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 517
15:17:15.677669 IP 172.217.169.67.80 > 10.1.1.20.47438: tcp 0
15:17:15.677685 IP 172.217.169.67.80 > 10.1.1.20.47438: tcp 83
15:17:15.677874 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 0
15:17:15.678140 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 154
15:17:15.687442 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 0
15:17:15.797630 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 0
15:17:15.797690 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 43
15:17:15.815192 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 0
15:17:15.839442 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 238
15:17:15.853425 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 0
15:17:15.853943 IP 172.217.169.68.443 > 10.1.1.20.59988: tcp 152
15:17:15.974323 IP 10.1.1.20.59988 > 172.217.169.68.443: tcp 0
15:17:16.001484 IP 10.1.1.20.44128 > 1.0.0.1.853: tcp 0
15:17:16.008681 IP 10.1.1.20.57883 > 1.1.1.1.853: tcp 0
15:17:16.798402 IP 172.217.169.67.80 > 10.1.1.20.47438: tcp 83
15:17:17.010786 IP 10.1.1.20.44128 > 1.0.0.1.853: tcp 0
15:17:17.010802 IP 10.1.1.20.57883 > 1.1.1.1.853: tcp 0
15:17:17.016479 IP 10.1.1.20.47438 > 172.217.169.67.80: tcp 0
15:17:19.061397 IP 10.1.1.20.44128 > 1.0.0.1.853: tcp 0
15:17:19.062291 IP 10.1.1.20.57883 > 1.1.1.1.853: tcp 0
            1 Reply Last reply Reply Quote 0
            • JKnottJ Offline
              JKnott
              last edited by

              @Solway said in Android saying "Connected, no Internet":

              its quiet random ports from phone..

              So, all you have to do is open all the random ports. 😉

              PfSense running on Qotom mini PC
              i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
              UniFi AC-Lite access point

              I haven't lost my mind. It's around here...somewhere...

              1 Reply Last reply Reply Quote 0
              • S Offline
                Solway
                last edited by

                haha, was hoping there was some information out there on ports that need to be open to check for internet connectivetity

                1 Reply Last reply Reply Quote 0
                • kiokomanK Offline
                  kiokoman LAYER 8
                  last edited by kiokoman

                  if you can, put a screenshot of your lan rules, if you realy want only http/https traffic to go out from your lan you only need 53 / 80 / 443 as destination port (not source port)
                  that's what i have on my guest wifi and iphone/android do not complain (later i have added port for whatsapp and playstore)

                  ̿' ̿'\̵͇̿̿\з=(◕_◕)=ε/̵͇̿̿/'̿'̿ ̿
                  Please do not use chat/PM to ask for help
                  we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
                  Don't forget to Upvote with the 👍 button for any post you find to be helpful.

                  1 Reply Last reply Reply Quote 0
                  • GertjanG Offline
                    Gertjan
                    last edited by

                    @Solway said in Android saying "Connected, no Internet":

                    DNS 53, NTP 123, HTTP/s 80/443, SMTPS 465, IMAPS 993
                    &
                    ICMP Echoreg for pings
                    all else is blocked by default

                    When you nail down port access like that, you should be very precise.

                    Suggestion : look at your firewall log file. You'll will find out fast enough the traffic that you blocked that should have been passed.

                    Example : DNS port 53 - UDP ? TCP ? both ?
                    etc ....

                    edit : iPhone said Connected but not connected.
                    That's ok : I'll put my bet on : "you broke DNS access".
                    ( it should be destination port 53 - TCP and UDP - nothing else.)

                    No "help me" PM's please. Use the forum, the community will thank you.
                    Edit : and where are the logs ??

                    1 Reply Last reply Reply Quote 0
                    • S Offline
                      Solway
                      last edited by

                      fw rules.png image url)

                      been testing with ports at bottom. but not working.

                      1 Reply Last reply Reply Quote 0
                      • kiokomanK Offline
                        kiokoman LAYER 8
                        last edited by

                        rules are processed from the top down, stopping at the first match, so i hope you don't have anything over "Allowed outgoing rules"

                        ̿' ̿'\̵͇̿̿\з=(◕_◕)=ε/̵͇̿̿/'̿'̿ ̿
                        Please do not use chat/PM to ask for help
                        we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
                        Don't forget to Upvote with the 👍 button for any post you find to be helpful.

                        S 1 Reply Last reply Reply Quote 0
                        • S Offline
                          Solway @kiokoman
                          last edited by

                          @kiokoman i have a block on one LAN ip, because its xp machine lol

                          but yes allow is on that order. PCs work fine on ethernet.

                          and also PCs work fine on WIFI

                          its just android saying "connected, no internet" even if i open up the ports i see being logged.

                          recon if theres anyhting in ICMP required?

                          1 Reply Last reply Reply Quote 0
                          • kiokomanK Offline
                            kiokoman LAYER 8
                            last edited by

                            what version of pfsense are you running?

                            ̿' ̿'\̵͇̿̿\з=(◕_◕)=ε/̵͇̿̿/'̿'̿ ̿
                            Please do not use chat/PM to ask for help
                            we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
                            Don't forget to Upvote with the 👍 button for any post you find to be helpful.

                            S 1 Reply Last reply Reply Quote 0
                            • S Offline
                              Solway @kiokoman
                              last edited by

                              @kiokoman
                              2.4.4-RELEASE-p3 (amd64)
                              built on Wed May 15 18:53:44 EDT 2019
                              FreeBSD 11.2-RELEASE-p10

                              i keep seeing random ports being blocked. when i open said ports and retry it cahnges to differenet ports

                              1 Reply Last reply Reply Quote 0
                              • S Offline
                                Solway
                                last edited by

                                more info

                                my wifi AP is a DD-wrt router in AP mode, connected to pfsense via network switch

                                i have windows 2019, acting as AD, DNS, NTP, DHCP

                                AP and pfsense is ported to win server for all the above.

                                1 Reply Last reply Reply Quote 0
                                • kiokomanK Offline
                                  kiokoman LAYER 8
                                  last edited by kiokoman

                                  android always try to go to different services (whatsapp / play store / google drive / huawai is probably stealing your data and sending it to china / samsung do the same but at least they tell you / etc etc )
                                  you should check if dns is working
                                  maybe try to disable ipv6 for the moment and see if it work via ipv4 only
                                  check day and time on your phone ..

                                  ̿' ̿'\̵͇̿̿\з=(◕_◕)=ε/̵͇̿̿/'̿'̿ ̿
                                  Please do not use chat/PM to ask for help
                                  we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
                                  Don't forget to Upvote with the 👍 button for any post you find to be helpful.

                                  S GertjanG 2 Replies Last reply Reply Quote 0
                                  • awebsterA Offline
                                    awebster
                                    last edited by

                                    I think you are confusion source port with destination port.
                                    Client's will almost always use a random source port to communicate with a well known destination port. Furthermore the firewall may reassign a random source port to the connection on the WAN side as well.
                                    For instance, in your packet capture list presented earlier, we can see host 10.1.1.20 source port 59988 communicating with a Google IP 172.216.169.68 on port 443.
                                    Return traffic is going to be implicitly allowed, this is the purpose of a stateful firewall. It knows and recognizes an allowed outbound connection and expects that return traffic is going to come back to the request and it will allow it, but only if there was an initial outbound connection. Basically, it doesn't just leave stuff open from outside unless you've initiated a connection.

                                    –A.

                                    1 Reply Last reply Reply Quote 0
                                    • S Offline
                                      Solway @kiokoman
                                      last edited by

                                      @kiokoman
                                      ipv6 is disabled by default

                                      ive got custom rom,
                                      i see android is trying to get a google IP, then trys a DNS ip

                                      15:57:40.216282 IP 10.1.1.20.47570 > 172.217.169.67.80: tcp 0
15:57:40.216322 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 0
15:57:40.229403 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 0
15:57:40.230392 IP 172.217.169.67.80 > 10.1.1.20.47570: tcp 0
15:57:40.379510 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 0
15:57:40.379569 IP 10.1.1.20.47570 > 172.217.169.67.80: tcp 0
15:57:40.380885 IP 10.1.1.20.47570 > 172.217.169.67.80: tcp 232
15:57:40.381306 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 180
15:57:40.394470 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 0
15:57:40.394901 IP 172.217.169.67.80 > 10.1.1.20.47570: tcp 0
15:57:40.394910 IP 172.217.169.67.80 > 10.1.1.20.47570: tcp 83
15:57:40.402846 IP 10.1.1.20.47570 > 172.217.169.67.80: tcp 0
15:57:40.405092 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 1418
15:57:40.405522 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 1133
15:57:40.424643 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 0
15:57:40.429217 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 0
15:57:40.446462 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 85
15:57:40.460026 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 276
15:57:40.465991 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 238
15:57:40.479929 IP 216.58.206.100.443 > 10.1.1.20.53298: tcp 152
15:57:40.530769 IP 10.1.1.20.53298 > 216.58.206.100.443: tcp 0
15:57:40.557255 IP 10.1.1.20.44262 > 1.0.0.1.853: tcp 0
15:57:40.557306 IP 10.1.1.20.58017 > 1.1.1.1.853: tcp 0
15:57:41.569937 IP 10.1.1.20.58017 > 1.1.1.1.853: tcp 0
15:57:41.571296 IP 10.1.1.20.44262 > 1.0.0.1.853: tcp 0
15:57:43.647856 IP 10.1.1.20.58017 > 1.1.1.1.853: tcp 0
15:57:43.648647 IP 10.1.1.20.44262 > 1.0.0.1.853: tcp 0
15:57:47.594139 IP 10.1.1.20.58017 > 1.1.1.1.853: tcp 0
15:57:47.595599 IP 10.1.1.20.44262 > 1.0.0.1.853: tcp 0
15:58:31.207046 IP 10.1.1.20.47575 > 172.217.169.67.80: tcp 0
15:58:31.207078 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 0
15:58:31.220075 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 0
15:58:31.220821 IP 172.217.169.67.80 > 10.1.1.20.47575: tcp 0
15:58:31.224669 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 0
15:58:31.405049 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 517
15:58:31.418632 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 0
15:58:31.418643 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 154
15:58:31.500980 IP 10.1.1.20.47575 > 172.217.169.67.80: tcp 0
15:58:31.501001 IP 10.1.1.20.47575 > 172.217.169.67.80: tcp 232
15:58:31.512938 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 0
15:58:31.512958 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 43
15:58:31.514883 IP 172.217.169.67.80 > 10.1.1.20.47575: tcp 0
15:58:31.514914 IP 172.217.169.67.80 > 10.1.1.20.47575: tcp 83
15:58:31.521415 IP 10.1.1.20.47575 > 172.217.169.67.80: tcp 0
15:58:31.529562 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 0
15:58:31.820584 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 238
15:58:31.833817 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 0
15:58:31.833848 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 152
15:58:32.062625 IP 216.58.206.100.443 > 10.1.1.20.53303: tcp 152
15:58:32.198460 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 0
15:58:32.553957 IP 10.1.1.20.53303 > 216.58.206.100.443: tcp 0
15:58:32.900797 IP 10.1.1.20.58020 > 1.1.1.1.853: tcp 0
15:58:32.900812 IP 10.1.1.20.44267 > 1.0.0.1.853: tcp 0
15:58:33.930800 IP 10.1.1.20.58020 > 1.1.1.1.853: tcp 0
15:58:33.930813 IP 10.1.1.20.44267 > 1.0.0.1.853: tcp 0
15:58:35.795403 IP 10.1.1.20.58020 > 1.1.1.1.853: tcp 0
15:58:35.796295 IP 10.1.1.20.44267 > 1.0.0.1.853: tcp 0
15:58:39.959164 IP 10.1.1.20.58020 > 1.1.1.1.853: tcp 0
15:58:40.047545 IP 10.1.1.20.44267 > 1.0.0.1.853: tcp 0
                                      1 Reply Last reply Reply Quote 0
                                      • JeGrJ Offline
                                        JeGr LAYER 8 Moderator
                                        last edited by JeGr

                                        @Solway said in Android saying "Connected, no Internet":

                                        im just locking down LAN so i know whats going outbound

                                        its quiet random ports from phone..

                                        Not that random

                                        tcp/853 - DNS over TLS to cloudflares servers. Either configured on your phone or on autoselect and you use CF as DNS so they are probed.
                                        tcp/80, tcp/443 no problem

                                        also your "random ports" are exactly that but that is expected from answers to 80/443 traffic - after all that are answers to valid traffic. You should really check the System/Firewall Log for your phone and filter for your phone IP and check, what gets actually blocked instead of looking at a tcpdump with all data packets ;)

                                        @Solway said in Android saying "Connected, no Internet":

                                        been testing with ports at bottom. but not working.

                                        Explained above. They are NOT used. You read the dump wrong :) Check your TCP Flags. Everything other than "S" (Syn) isn't really relevant to your cause as it's data, resets, endings etc.

                                        Don't forget to upvote 👍 those who kindly offered their time and brainpower to help you!

                                        If you're interested, I'm available to discuss details of German-speaking paid support (for companies) if needed.

                                        S 1 Reply Last reply Reply Quote 0
                                        • S Offline
                                          Solway @JeGr
                                          last edited by

                                          @JeGr
                                          you lost me there lol. as you might see im new to pfsense ☺

                                          i understand the stateful firewall thing... was hoping to allow known ports and not random stuff.

                                          JeGrJ 1 Reply Last reply Reply Quote 0
                                          • GertjanG Offline
                                            Gertjan @kiokoman
                                            last edited by

                                            When you go for :

                                            @Solway said in Android saying "Connected, no Internet":

                                            disabled the "allow all on LAN"

                                            then you need to know for every application on your network ... :

                                            @kiokoman said in Android saying "Connected, no Internet":

                                            whatsapp / play store / google drive /

                                            what outgoing ports they are using. No exception.
                                            You'll be in for some Google time ^^

                                            No "help me" PM's please. Use the forum, the community will thank you.
                                            Edit : and where are the logs ??

                                            1 Reply Last reply Reply Quote 0
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