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    Is ftp nat broken on 2.2 ?

    Scheduled Pinned Locked Moved NAT
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by

      The ftp helper/proxy is not included in in 2.2..

      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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      • V
        virusbcn
        last edited by

        Hello, and another option to have an ftp server behind a Pfsense 2.2 ???

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        • K
          kejianshi
          last edited by

          I had the clients install openvpn and passed only the /31 that the ftp server is running on.  Works.

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            If you want to run ftp behind pfsense without a helper and allow for passive, then do it old school and manually forward the passive ports your going to use.  And make sure your ftp server provides its public IP.  Done and done, but I would take the opportunity to move to something more secure like sftp.

            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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            • K
              kejianshi
              last edited by

              It didn't work for me.  Forwarded the ports, set the external IP.  I could log in but wasn't getting the directories.

              I'm pretty good at forwarding a port, so something else is required on my network other than just forwarding ports.

              And lots of other people had at it before they called me.

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                Well what ports did you forward.. If a client is is going passive to your server.  You have to forward the ports the server is going to use for its passive connections.  So normally you set your server to use a specific range say 5000-6000.  And then forward those ports.

                When you say you were logging in - you were external and not trying to do nat reflection?

                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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                • K
                  kejianshi
                  last edited by

                  Everything is correct.  5000-6000 were forwarded.  For me, this is a solved problem.  Having them do business as usual while using a vpn works fine and is more secure.

                  I really think the problem is because we don't get our IPs via a bridge.  It comes via NAT 1:1 and I feel NAT is the issue.

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                  • D
                    doktornotor Banned
                    last edited by

                    The issue is, the FTP server is reporting the NATed IP instead of the public one, and the client tries to talk to that unroutable NATed IP. This indeed can be fixed by properly configuring the FTP server as documented by the wiki article, or by using a VPN so that the client is actually able to talk to the RFC1918 IP, instead of sending packets to a blackhole.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      ^That would be my guess as well, which I thought was quite clearly stated with "And make sure your ftp server provides its public IP."

                      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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                      • K
                        kejianshi
                        last edited by

                        It provides its public IP.  There are only two blanks related to that.  Port range and public IP.  Kinda hard to get wrong.

                        Still, its not working - I'm not worried about it.

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          So lets see a log of the connection.  I can tell for fact that this works - because have done it..  What ftp server are you using?

                          edit:  Here see attached so this is the ftp server showing that it sends the pasv command and port 19*256+137 = 5001

                          Sure the client supports passive..  Just because you send say quote pasv doesn't mean the client then doesn't send port command.

                          I wold take a look at the logs to see that passive and correct IPs and port actually sent.

                          ftpclientside.png
                          serversideftp.png
                          ftpclientside.png_thumb
                          serversideftp.png_thumb

                          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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                          • K
                            kejianshi
                            last edited by

                            Windows server.  (its highly possible that firewall is the issue) Forwarding a port is simple.  Been checked. 
                            I'm not going to spin my wheels with it.  Everything else that relies on port forwards was unaffected.
                            I hate running windows server to be honest and I told my partner that if he insisted on it that all the problems fall on him.
                            Not gonna mess with it.  I fixed the issue on my end.

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator
                              last edited by

                              Your solution is clearly more secure.. But this old school method works as well - if not your doing something wrong ;)

                              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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