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    Is ftp nat broken on 2.2 ?

    Scheduled Pinned Locked Moved NAT
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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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