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    Mobile IPSec VPN works but does not follow 302 redirects

    Scheduled Pinned Locked Moved IPsec
    ipsec vpn mobilnatfirewall
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    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      And don't filter on anything but the host address so we can see the DNS queries.

      Chattanooga, Tennessee, USA
      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
      Do Not Chat For Help! NO_WAN_EGRESS(TM)

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      • S
        svarto
        last edited by

        0_1549228302261_PacketCaptureontwointerfaces.zip

        @Konstanti @Derelict I created two packetcaptures on the two separate interfaces, filtering for the android IPSec VPN client as Host (i.e. 192.168.200.1)

        Should be something in the files now...

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        • S
          svarto
          last edited by

          @Konstanti @Derelict What is very peculiar is that when I am connected to the Wifi on my phone, and then connect through the IPSec VPN. Everything works. When I am not on the internal network but on 4G on my phone, and connect through the IPSec VPN - it doesn't work.

          See packetcapture from being on the Wifi and connected through VPN and everything works:
          0_1549229309189_IPSecInterfaceonWifiallworks.zip

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by

            Doesn't do any good to look at pcaps of it working without one of it not working to compare it to.

            Chattanooga, Tennessee, USA
            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
            Do Not Chat For Help! NO_WAN_EGRESS(TM)

            S 1 Reply Last reply Reply Quote 0
            • K
              Konstanti @svarto
              last edited by Konstanti

              This post is deleted!
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              • S
                svarto @Derelict
                last edited by svarto

                @derelict said in Mobile IPSec VPN works but does not follow 302 redirects:

                Doesn't do any good to look at pcaps of it working without one of it not working to compare it to.

                I submitted two packet captures, one where it wasn't working (i.e. Android phone on 4G and the IPSec VPN turned on) and the second where it is working (i.e. Android phone on internal Wifi and the IPSec VPN turned on).

                My problem is that I would expect it to work the same whenever I am connected through the IPSec VPN...

                Or did I misunderstand your comment?

                Please see below:
                0_1549260318219_bothpacketcaptures.zip

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                • K
                  Konstanti @svarto
                  last edited by

                  @svarto
                  Hey
                  Make two files on the lan interface (ipsec is not necessary)
                  The first, when works
                  Second , when not working
                  What you posted was an ipsec capture (workingpacketcapture.cap)
                  It looks like this

                  0_1549261533639_5d9a5085-122d-4b94-b0c5-4555cd33a333-image.png

                  The second file (Notworkingpacketcapture.cap) you already showed yesterday

                  0_1549261903833_ef9630b8-e60a-4cda-837b-a8a5a4271481-image.png

                  This is yesterday's file (LanInterfaceClientasHost.cap)

                  0_1549261872671_421930b2-149a-4a8d-997b-b3cfebb499b9-image.png

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                  • S
                    svarto
                    last edited by

                    @Konstanti Thanks for your patience, I did the packet captures for the two separate cases, attach them here in the .zip file and they are named according to if they were working or not:

                    0_1549262621274_LANsplittest.zip

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                    • K
                      Konstanti @svarto
                      last edited by

                      @svarto

                      And what is the error expressed ?
                      Visually, encrypted data is exchanged in both cases. There are no errors in the exchange. The client confirms receipt of the data.

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                      • S
                        svarto
                        last edited by svarto

                        @Konstanti

                        I attach a network diagram of my setup to make it clearer.

                        This is what is weird, when I connect to the VPN from my phone on 4G (option 1 in the attached diagram), I don't get errors any errors just timeouts. I can access everything on the internal LAN and internet, except, I cannot login into certain webservices. When I enter my password and press login, it just stalls - the browser says it is "thinking / loading" and then nothing happens. After a long time I get a "Server not found" error in the browser.

                        However, when I am on my phone on the internal wifi over the VPN (option 2), then I click login and get redirected instantly to the dashboard of the webapp. I can also reach the webapp from outside my network as I have a reverse proxy (option 3), and this works fine.

                        The reason I want to set up the Mobile IPSec VPN is that I want to close down the reverse proxy I have set up so that I can only access my webservices over the VPN and not anymore expose them directly to the internet.

                        0_1549268966959_7037c544-acec-48e5-bea3-45c0e02ae4b2-image.png

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