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    remote ftp ssl access failed

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    • S
      sasa1 @johnpoz
      last edited by

      @johnpoz I confirm that in the modality:
      require implicit FTP over TLS
      I don't have problems.

      My problem is only when I use the mode:
      require explicit FTP over TLS

      if I understand what you are saying, my problem is in the configuration of the LAN Rules, I am attaching an image.
      Do I need to change this rules?
      Thanks.
      lan rules.PNG

      johnpozJ 1 Reply Last reply Reply Quote 0
      • johnpozJ
        johnpoz LAYER 8 Global Moderator @sasa1
        last edited by johnpoz

        @sasa1 your lan rules are not the problem.. Those are the default any any rule - all traffic would be allowed. If you can not connect to the server for some reason a block upstream?

        Here I set to what you stated..

        explicit.jpg

        This would use port 21 for the control channel

        Status:	Resolving address of test.rebex.net
Status:	Connecting to 195.144.107.198:21...
Status:	Connection established, waiting for welcome message...
Response:	220 Microsoft FTP Service
Command:	AUTH TLS
Response:	234 AUTH command ok. Expecting TLS Negotiation.
Status:	Initializing TLS...
Status:	Verifying certificate...
Status:	TLS connection established.
Command:	USER demo
Response:	331 Password required for demo.
Command:	PASS ********
Response:	230 User logged in.
Command:	SYST
Response:	215 Windows_NT
Command:	FEAT
Response:	211-Extended features supported:
Response:	 LANG EN*
Response:	 UTF8
Response:	 AUTH TLS;TLS-C;SSL;TLS-P;
Response:	 PBSZ
Response:	 PROT C;P;
Response:	 CCC
Response:	 HOST
Response:	 SIZE
Response:	 MDTM
Response:	 REST STREAM
Response:	211 END
Command:	OPTS UTF8 ON
Response:	200 OPTS UTF8 command successful - UTF8 encoding now ON.
Command:	PBSZ 0
Response:	200 PBSZ command successful.
Command:	PROT P
Response:	200 PROT command successful.
Status:	Logged in
Status:	Retrieving directory listing...
Command:	PWD
Response:	257 "/" is current directory.
Command:	TYPE I
Response:	200 Type set to I.
Command:	PASV
Response:	227 Entering Passive Mode (195,144,107,198,4,7).
Command:	LIST
Response:	150 Opening BINARY mode data connection.
Response:	226 Transfer complete.
Command:	PASV
Response:	227 Entering Passive Mode (195,144,107,198,4,9).
Command:	LIST -a
Response:	150 Opening BINARY mode data connection.
Response:	226 Transfer complete.
Status:	Calculating timezone offset of server...
Command:	MDTM readme.txt
Response:	213 20140408140939
Status:	Timezone offset of server is 7200 seconds.
Status:	Directory listing of "/" successful
Status:	Retrieving directory listing of "/aspnet_client"...
Command:	CWD /aspnet_client
Response:	250 CWD command successful.
Command:	PWD
Response:	257 "/aspnet_client" is current directory.
Command:	PASV
Response:	227 Entering Passive Mode (195,144,107,198,4,11).
Command:	LIST -a
Response:	150 Opening BINARY mode data connection.
Response:	226 Transfer complete.
Status:	Directory listing of "/aspnet_client" successful

        Works just fine.. Using passive for the data channel.. You can see above in the PASV command and then the server sends me the IP and port to connect too. Which via your outbound rules would be allowed without any problem.. With ftp there is a control channel connection and a data channel connection. if you can not connect control, then you never can get a data channel. If you connect with control, then be it using active or passive will determine who starts the conversation for the data connection..

        What is the specific error your seeing in filezilla when you test.. Turn on detailed log view if you want to get a bit more info.. Your first posted error has to do with trying to use the sftp port while trying to do ftps..

        ftps be it explicit would use port 21 for control channel.. Implicit uses port 990.

        An intelligent man is sometimes forced to be drunk to spend time with his fools
        If you get confused: Listen to the Music Play
        Please don't Chat/PM me for help, unless mod related
        SG-4860 24.11 | Lab VMs 2.8, 24.11

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        • S
          sasa1 @johnpoz
          last edited by

          @johnpoz the error messagges are:

          Stato: In attesa di un nuovo tentativo...
          Stato: Risoluzione dell'indirizzo IP test.rebex.net in corso
          Stato: Connessione a 195.144.107.198:21...
          Stato: Connessione stabilita, in attesa del messaggio di benvenuto...
          Risposta: 220 Microsoft FTP Service
          Comando: AUTH TLS
          Risposta: 234 AUTH command ok. Expecting TLS Negotiation.
          Stato: Inizializzazione TLS...
          Errore: Errore GnuTLS -110: The TLS connection was non-properly terminated.
          Stato: Il server non ha correttamente chiuso la connessione TLS
          Stato: Tentativo di connessione con "ECONNABORTED - Connessione interrotta" non riuscito.
          Errore: Impossibile collegarsi al server

          thanks.

          johnpozJ 1 Reply Last reply Reply Quote 0
          • johnpozJ
            johnpoz LAYER 8 Global Moderator @sasa1
            last edited by

            @sasa1 said in remote ftp ssl access failed:

            Errore: Errore GnuTLS -110: The TLS connection was non-properly terminated.

            What version of filezilla are you using? I am on 3.55.0 which is current.

            An intelligent man is sometimes forced to be drunk to spend time with his fools
            If you get confused: Listen to the Music Play
            Please don't Chat/PM me for help, unless mod related
            SG-4860 24.11 | Lab VMs 2.8, 24.11

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            • S
              sasa1 @johnpoz
              last edited by sasa1

              @johnpoz the filezilla version is:
              3.54.1

              I have updated to version 3.55 but the result does not change

              thanks.

              johnpozJ 1 Reply Last reply Reply Quote 0
              • johnpozJ
                johnpoz LAYER 8 Global Moderator @sasa1
                last edited by johnpoz

                @sasa1 I would update, and then turn on detailed logging..

                Right click in the log window area

                logview.jpg

                You might want to turn on debug as well

                debug.jpg

                Then your log will look like this

                Status:	Resolving address of test.rebex.net
Status:	Connecting to 195.144.107.198:21...
Status:	Connection established, waiting for welcome message...
Trace:	CFtpControlSocket::OnReceive()
Response:	220 Microsoft FTP Service
Trace:	CFtpLogonOpData::ParseResponse() in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 2
Command:	AUTH TLS
Trace:	CFtpControlSocket::OnReceive()
Response:	234 AUTH command ok. Expecting TLS Negotiation.
Trace:	CFtpLogonOpData::ParseResponse() in state 2
Status:	Initializing TLS...
Trace:	tls_layer_impl::client_handshake()
Trace:	tls_layer_impl::continue_handshake()
Trace:	TLS handshake: About to send CLIENT HELLO
Trace:	TLS handshake: Sent CLIENT HELLO
Trace:	tls_layer_impl::on_send()
Trace:	tls_layer_impl::continue_handshake()
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	TLS handshake: Received SERVER HELLO
Trace:	TLS handshake: Processed SERVER HELLO
Trace:	TLS handshake: Received CERTIFICATE
Trace:	TLS handshake: Processed CERTIFICATE
Trace:	TLS handshake: Received CERTIFICATE STATUS
Trace:	TLS handshake: Processed CERTIFICATE STATUS
Trace:	TLS handshake: Received SERVER KEY EXCHANGE
Trace:	TLS handshake: Processed SERVER KEY EXCHANGE
Trace:	TLS handshake: Received SERVER HELLO DONE
Trace:	TLS handshake: Processed SERVER HELLO DONE
Trace:	TLS handshake: About to send CLIENT KEY EXCHANGE
Trace:	TLS handshake: Sent CLIENT KEY EXCHANGE
Trace:	TLS handshake: About to send FINISHED
Trace:	TLS handshake: Sent FINISHED
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	TLS handshake: Received FINISHED
Trace:	TLS handshake: Processed FINISHED
Trace:	TLS Handshake successful
Trace:	Protocol: TLS1.2, Key exchange: ECDHE-SECP521R1-RSA-SHA1, Cipher: AES-256-CBC, MAC: SHA1
Trace:	tls_layer_impl::verify_certificate()
Status:	Verifying certificate...
Trace:	CFtpControlSocket::SetAsyncRequestReply
Status:	TLS connection established.
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 6
Command:	USER demo
Trace:	CFtpControlSocket::OnReceive()
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	331 Password required for demo.
Trace:	CFtpLogonOpData::ParseResponse() in state 6
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 6
Command:	PASS ********
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	230 User logged in.
Trace:	CFtpLogonOpData::ParseResponse() in state 6
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 10
Command:	OPTS UTF8 ON
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	200 OPTS UTF8 command successful - UTF8 encoding now ON.
Trace:	CFtpLogonOpData::ParseResponse() in state 10
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 11
Command:	PBSZ 0
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	200 PBSZ command successful.
Trace:	CFtpLogonOpData::ParseResponse() in state 11
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 12
Command:	PROT P
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	200 PROT command successful.
Trace:	CFtpLogonOpData::ParseResponse() in state 12
Status:	Logged in
Trace:	Measured latency of 128 ms
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Trace:	CFtpLogonOpData::Reset(0) in state 15
Trace:	CFileZillaEnginePrivate::ResetOperation(0)
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpListOpData::Send() in state 0
Status:	Retrieving directory listing...
Trace:	CFtpChangeDirOpData::Send() in state 0
Trace:	CFtpChangeDirOpData::Send() in state 1
Command:	PWD
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	257 "/" is current directory.
Trace:	CFtpChangeDirOpData::ParseResponse() in state 1
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Trace:	CFtpChangeDirOpData::Reset(0) in state 1
Trace:	CFtpListOpData::SubcommandResult(0) in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpListOpData::Send() in state 2
Trace:	CFtpRawTransferOpData::Send() in state 0
Trace:	CFtpRawTransferOpData::Send() in state 1
Command:	TYPE I
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	200 Type set to I.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 2
Command:	PASV
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	227 Entering Passive Mode (195,144,107,198,4,9).
Trace:	CFtpRawTransferOpData::ParseResponse() in state 2
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 4
Trace:	Binding data connection source IP to control connection source IP 192.168.9.100
Trace:	tls_layer_impl::client_handshake()
Trace:	Trying to resume existing TLS session.
Command:	LIST -a
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	150 Opening BINARY mode data connection.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 4
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 5
Trace:	tls_layer_impl::on_send()
Trace:	tls_layer_impl::continue_handshake()
Trace:	TLS handshake: About to send CLIENT HELLO
Trace:	TLS handshake: Sent CLIENT HELLO
Trace:	tls_layer_impl::on_read()
Trace:	tls_layer_impl::continue_handshake()
Trace:	TLS handshake: Received SERVER HELLO
Trace:	TLS handshake: Processed SERVER HELLO
Trace:	TLS handshake: Received FINISHED
Trace:	TLS handshake: Processed FINISHED
Trace:	TLS handshake: About to send FINISHED
Trace:	TLS handshake: Sent FINISHED
Trace:	TLS Handshake successful
Trace:	TLS Session resumed
Trace:	Protocol: TLS1.2, Key exchange: ECDHE-SECP521R1, Cipher: AES-256-CBC, MAC: SHA1
Trace:	tls_layer_impl::verify_certificate()
Trace:	CTransferSocket::OnConnect
Trace:	CTransferSocket::OnReceive(), m_transferMode=0
Trace:	tls_layer_impl::on_read()
Trace:	CTransferSocket::OnReceive(), m_transferMode=0
Trace:	CTransferSocket::TransferEnd(1)
Trace:	tls_layer_impl::shutdown()
Trace:	tls_layer_impl::continue_shutdown()
Trace:	CFtpControlSocket::TransferEnd()
Trace:	tls_layer_impl::on_read()
Trace:	CFtpControlSocket::OnReceive()
Response:	226 Transfer complete.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 7
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Trace:	CFtpRawTransferOpData::Reset(0) in state 7
Trace:	CFtpListOpData::SubcommandResult(0) in state 3
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Trace:	CFtpListOpData::Reset(0) in state 3
Status:	Directory listing of "/" successful
Trace:	CFileZillaEnginePrivate::ResetOperation(0)

                Which will show us more info about the TLS exchange..

                You could also try clearing your cached certs? If your on windows that would be here "%APPDATA%\FileZilla"

                There is a trustedcerts.xml file.

                Once you have cleared the certs - you should see popup like I showed in my connections with details of the cert they are presenting you.

                An intelligent man is sometimes forced to be drunk to spend time with his fools
                If you get confused: Listen to the Music Play
                Please don't Chat/PM me for help, unless mod related
                SG-4860 24.11 | Lab VMs 2.8, 24.11

                S 1 Reply Last reply Reply Quote 0
                • S
                  sasa1 @johnpoz
                  last edited by

                  @johnpoz I deleted the trustedcerts.xml file, enabled verbose logging and debugging.
                  I attach files with the errors received.
                  Thanks.
                  debug 4.txt

                  johnpozJ 1 Reply Last reply Reply Quote 0
                  • johnpozJ
                    johnpoz LAYER 8 Global Moderator @sasa1
                    last edited by johnpoz

                    @sasa1

                    Looks like you never got the hello back..

                    Traccia:	tls_layer_impl::client_handshake()
Traccia:	tls_layer_impl::continue_handshake()
Traccia:	TLS handshake: About to send CLIENT HELLO
Traccia:	TLS handshake: Sent CLIENT HELLO
Traccia:	tls_layer_impl::on_send()
Traccia:	tls_layer_impl::continue_handshake()
Traccia:	tls_layer_impl::on_read()
Traccia:	tls_layer_impl::continue_handshake()
Traccia:	tls_layer_impl::on_read()
Traccia:	tls_layer_impl::continue_handshake()
Traccia:	tls_layer_impl::failure(-110)

                    Maybe you could update your timeout? I believe it defaults to 60 seconds.. Maybe yours is lower, or you could say up it to 120 seconds? The way I read that is you never got the answer back from the client hello - server hello..

                    For sanity shake you could sniff on pfsense wan when you try it.. You should be able to see what is sent and gotten back.. But yeah never going to get far if you never get the server hello back to work out the handshake..

                    Are you doing any sort of vpn on pfsense, do you have multiple wan connections? Anything like that?

                    An intelligent man is sometimes forced to be drunk to spend time with his fools
                    If you get confused: Listen to the Music Play
                    Please don't Chat/PM me for help, unless mod related
                    SG-4860 24.11 | Lab VMs 2.8, 24.11

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                    • S
                      sasa1 @johnpoz
                      last edited by sasa1

                      @johnpoz I took the timed-out to 120 seconds but to no avail.
                      yes there is an active vpn with openswan.

                      I disabled the vpn but unfortunately the result does not change

                      Thanks.

                      johnpozJ 1 Reply Last reply Reply Quote 0
                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator @sasa1
                        last edited by

                        Could you route your connection to this ftps server around that vpn..

                        If you capture your traffic and disable the ftp decode wireshark will do on it - you can then view the tls info.. So example here sniff via a connection... You can see my client hello and then the server hello..

                        wireshark.jpg

                        An intelligent man is sometimes forced to be drunk to spend time with his fools
                        If you get confused: Listen to the Music Play
                        Please don't Chat/PM me for help, unless mod related
                        SG-4860 24.11 | Lab VMs 2.8, 24.11

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                        • S
                          sasa1 @johnpoz
                          last edited by

                          @johnpoz I disabled the vpn connection and removed the rules related to the vpn but unfortunately the problem remains the same.
                          Thanks.

                          johnpozJ 1 Reply Last reply Reply Quote 0
                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator @sasa1
                            last edited by

                            Well if they don't send you a server hello - then no you would not be able to connect.

                            A sniff will show you what pfsense sees on its wan in return.. There would be no reason pfsense would not send this traffic to your client if it actually got it..

                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                            If you get confused: Listen to the Music Play
                            Please don't Chat/PM me for help, unless mod related
                            SG-4860 24.11 | Lab VMs 2.8, 24.11

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                            • S
                              sasa1 @johnpoz
                              last edited by

                              @johnpoz do i have to use wireshark or can i use logs generated by pfsense?
                              thanks.

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                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator @sasa1
                                last edited by johnpoz

                                No you sniff with pfsense (diagnostic packet capture) - its just the log they show in that output even with full info set is going to be hard to read.. Just do the sniff and then download it and open it with wireshark.. Makes it much easier to view/read/understand, etc.

                                You can set it to only capture the IP of the ftps server.. 195.144.107.198 so its not all that big.. And has only the data your interested in vs all the other traffic that flowing.

                                You will have to tell wireshark not to decode it as ftp - which is what it will most likely auto do.. Then it would look like this..

                                ftp.jpg

                                What your interested in is the tls stuff - so telling wireshark not to decode as ftp will make it easier to see the tls stuff..

                                disable.jpg

                                The view the package capture ok depending on what specific your looking for - but for something like this download the capture and use your fav network analyzer.. Unless you think you could make heads or talls of this ;)

                                hardtofollow.jpg

                                An intelligent man is sometimes forced to be drunk to spend time with his fools
                                If you get confused: Listen to the Music Play
                                Please don't Chat/PM me for help, unless mod related
                                SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                • S
                                  sasa1 @johnpoz
                                  last edited by

                                  This post is deleted!
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                                  • S
                                    sasa1 @johnpoz
                                    last edited by

                                    @johnpoz said in remote ftp ssl access failed:

                                    195.144.107.198

                                    ftp tls.PNG

                                    johnpozJ 1 Reply Last reply Reply Quote 0
                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator @sasa1
                                      last edited by johnpoz

                                      That is not the wan.. Do the packet capture on pfsense.. Just download it to view in wireshark..

                                      And I showed you exactly how to disable the ftp decode wireshark is doing..

                                      But even that can see 195.x sending you a FIN... Closing the session..

                                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                                      If you get confused: Listen to the Music Play
                                      Please don't Chat/PM me for help, unless mod related
                                      SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                      • S
                                        sasa1 @johnpoz
                                        last edited by

                                        @johnpoz I have installed wireshark on the server where I use Filezilla, from this server can I connect wireshark to control the pfsense WAN traffic or do I have to install wireshark on pfsense?
                                        Thanks.

                                        johnpozJ 1 Reply Last reply Reply Quote 0
                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator @sasa1
                                          last edited by johnpoz

                                          Dude look at the picture I posted... You can do the packet capture right on pfsense... Then just download the pcap and open it with wireshark on any machine you want..

                                          see the post from above

                                          download.jpg

                                          in pfsense here

                                          packetcapture.jpg

                                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                                          If you get confused: Listen to the Music Play
                                          Please don't Chat/PM me for help, unless mod related
                                          SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                          • S
                                            sasa1 @johnpoz
                                            last edited by

                                            @johnpoz now I followed your instructions, in pfsense I captured the packages, I downloaded the file which I then opened in whireshark, I attach the result.
                                            Thanks.
                                            cap.PNG

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