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    Pfsense Block access external Public FTP

    Scheduled Pinned Locked Moved Firewalling
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    • doguibnuD
      doguibnu
      last edited by

      Right,
      This log is from out Pfsense network
      How to configure the rule on PFsense to work inside pfsense?
      I did try many times some rules configuration to pass this ftp
      I do not know how to fix!

      Thanks

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      • doguibnuD
        doguibnu
        last edited by

        SOLVED

        Steps:
        Install FTP client proxy package
        Go to Service - FTP client proxy
        Click to Select Enable the FTP proxy
        On Local Interface - Select Lan
        Click Save

        Go to Firewall-Rules-Wan
        New Rule
        Action: Pass
        Interface: Wan
        Protocol: TCP

        Source: Single host or alias
        IP: IP ftp service
        Source Port Range
        From: 21
        To: 249 (on my scenario)

        Destination: any
        Destination Port Range
        From: 21
        to: 249

        Click on Save

        Why port 249?

        The log from filezilla on out Pfsense network show:
        Response: 227 Entering Passive Mode (IP ftp service**,21,249**).

        Now its works fine

        Thanks Johnpoz and all for attention and help

        Douglas

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by johnpoz

          No No No...

          None of that has anything to do with any of it..

          Talking to a public IP outside pfsense from a client inside pfsense using passive has ZERO need for any port forward or wan rule. While port 21 is the default control port of ftp. how you read passive command is WRONG..

          Again I am going to ask have you even bothered to look at the link I provided on how ftp works..

          Again your statement is completely wrong with how ftp works..

          This statement
          Passive Mode (189,28,143,164,21,249).

          Is telling the client to talk to IP 189.28.143.164 on port (21x256)+249 = port 5625

          For a client to talk a ftp server outside pfsense from inside pfsense there is ZERO to do.. Since the client will create the connection to the server and the default rules on lan are any any.. Unless you have modified your lan rules from any any there is nothing to do to talk passive to a ftp server on the public internet from behind pfsense

          For client to talk to server in active mode, then you need the ftp proxy package installed an setup. So that it can open the inbound traffic for the data channel to be opened.

          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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          • doguibnuD
            doguibnu
            last edited by

            @johnpoz said in Pfsense Block access external Public FTP:

            No No No…
            None of that has anything to do with any of it…
            Talking to a public IP outside pfsense from a client inside pfsense using passive has ZERO need for any port forward or wan rule. While port 21 is the default control port of ftp. how you read passive command is WRONG…
            Again I am going to ask have you even bothered to look at the link I provided on how ftp works…
            Again your statement is completely wrong with how ftp works…
            This statement
            Passive Mode (189,28,143,164,21,249).
            Is telling the client to talk to IP 189.28.143.164 on port (21x256)+249 = port 5625
            For a client to talk a ftp server outside pfsense from inside pfsense there is ZERO to do… Since the client will create the connection to the server and the default rules on lan are any any… Unless you have modified your lan rules from any any there is nothing to do to talk passive to a ftp server on the public internet from behind pfsense
            For client to talk to server in active mode, then you need the ftp proxy package installed an setup. So that it can open the inbound traffic for the data channel to be opened.

            I am sorry!
            I do not what to do more.
            Which your suggestion to configure in right mode?

            Yes I did read your link about the differences active and passive ftp.
            I will again and again

            But, inside PFsense, how to configure?

            I will search more information about

            Thanks you

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              there is NOTHING to configure in pfsense for client talking passive.. Nothing unless you modified the default rules to block ports? What are your current lan rules?

              Only if your using active to talk to the server do you need the active ftp package helper.. From your log you were using passive and working..

              Please post log of your client that is NOT working when behind pfsense and your LAN rules..

              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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              • doguibnuD
                doguibnu
                last edited by

                Hello!
                Please, look at this link. He seems was the same difficult that me.

                https://www.experts-exchange.com/questions/28546035/Trouble-accessing-FTP-sites-via-pfSense.html

                I think that I need to do a Lan Rule to pass on ports 20 and 21, right?

                Other point:
                On my filezilla log inside PFsense network also show me Grey color text (not green) after the wrong wan rule that you show me.
                Can be the way

                Thanks

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by johnpoz

                  OMG... Dude did you edit the default lan rules away from any any?? If so then yeah your going to have problems. And your going to need more than just 21.. 20 would NEVER be used its a source port in active mode.

                  But the server in passive is going to give you some random high port to talk to... So post up a screen shot of your LAN rules!!!

                  I can not help you without some information.. How many times do I have to ask to see your logs? If your LAN rules are not any any then yes you need to show them.. I stated 3 days ago that if you had messed with your lan rules doing any blocking you could have problems with passive. If you would of read the link I gave you goes over what happens in the data channel... So if you are limiting lan to specific ports via rules other than any any then YES you going to have a bad day trying to ftp in passive mode.

                  That thread is from 2014... Yeah I will admit users have problems with ftp... Ftp should of been killed off 10 years ago.. It is NOT secure, it sucks through NAT, do I need to go on.. sftp is secure, its 1 port so no issues through nat. There are both free clients and servers for every OS.. There is ZERO reason to be still using ftp other than complete lack of caring on the point of the person running the server for security...

                  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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                  • doguibnuD
                    doguibnu
                    last edited by

                    Hello
                    Here is my Lan Rules

                    0_1528296053152_lan-rules-pfsense.png

                    Yes, you right about sftp. I did read about it. But, I need to study how to server config and pfsense config. Then, enable sftp on our network.
                    But, remember, the Datasus FTP is external service that works with web service database. It is not our ftp server. Then, sad, but I need to do that works fine.

                    I would like to thanks your patience and help until now.

                    Douglas

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      so you have downstream networks? Why do you have that 10/8 rule? And your icmp rule is any for source network would be pointless unless you have downstream networks.

                      And really is pointless anyway since you have 10/8 rule - unless you have other networks other than 10/8?

                      So if your client is on lan net or in 10/8 your rules are any any and should have no issues doing passive ftp to server outside.

                      Did you mess with outbound nat? Your using lan net as your transit to these downstream networks? Maybe you have a asymmetrical routing problem... Please draw up your network and where are you clients in your network that your trying to ftp with. Do they use pfsense as their gateway?

                      Your not routing any traffic through a vpn are you?

                      Do you have any rules in your floating tab?

                      BTW your scanner rule is pointless unless some downstream client is not in lan net or 10/8

                      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

                      doguibnuD 1 Reply Last reply Reply Quote 0
                      • doguibnuD
                        doguibnu @johnpoz
                        last edited by

                        @johnpoz said in Pfsense Block access external Public FTP:

                        hello

                        so you have downstream networks? Why do you have that 10/8 rule? And your icmp rule is any for source network would be pointless unless you have downstream networks.

                        We have 43 networks point route inside pfsense:
                        For exemple:
                        10.10.11.254
                        10.10.34.254
                        10.10.29.254
                        10.10.30.254
                        .......
                        the internet is provide by:
                        concentrator Internet MPLS
                        Dedicated Internet

                        And really is pointless anyway since you have 10/8 rule - unless you have other networks other than 10/8?

                        So if your client is on lan net or in 10/8 your rules are any any and should have no issues doing passive ftp to server outside.

                        Did you mess with outbound nat? Your using lan net as your transit to these downstream networks?

                        Yes, we are using lan net to transit on these downstream

                        Maybe you have a asymmetrical routing problem... Please draw up your network and where are you clients in your network that your trying to ftp with. Do they use pfsense as their gateway?

                        Yes, they are using pfsense for gateway. Each sector have modem (or circuit point) route to pfsense

                        Your not routing any traffic through a vpn are you?

                        We have some users access vpn through our pfsense because we have a NAS.

                        Do you have any rules in your floating tab?
                        No, there are not rule floating tab.

                        BTW your scanner rule is pointless unless some downstream client is not in lan net or 10/8

                        Thanks for now

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          @doguibnu said in Pfsense Block access external Public FTP:

                          Yes, they are using pfsense for gateway. Each sector have modem (or circuit point) route to pfsense

                          So there are client in lan net.. Do you have host routing on them, if not then your asymmetrical if they are talking to any downstream network.

                          So if client in lan wants to talk to 10.x network he sends traffic to his gateway pfsense in the lan net. Pfsense then sends the traffic to some downstream router, the return traffic will not go to pfsense.

                          Please DRAW your network, and what what is your outbound nat rules. Is lan net also a 10.x address?

                          And again please post a LOG of filezilla client behind pfsense failing to connect... So we can see what gets sent in the passive command.

                          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

                          doguibnuD 1 Reply Last reply Reply Quote 0
                          • doguibnuD
                            doguibnu @johnpoz
                            last edited by

                            Hello

                            @johnpoz said in Pfsense Block access external Public FTP:

                            So there are client in lan net… Do you have host routing on them, if not then your asymmetrical if they are talking to any downstream network.

                            0_1528314666541_routes.png

                            So if client in lan wants to talk to 10.x network he sends traffic to his gateway pfsense in the lan net. Pfsense then sends the traffic to some downstream router, the return traffic will not go to pfsense.
                            Please DRAW your network, and what what is your outbound nat rules. Is lan net also a 10.x address?

                            0_1528314753334_pfsense-draw.png

                            And again please post a LOG of filezilla client behind pfsense failing to connect… So we can see what gets sent in the passive command.

                            Here log of filezilla. I disabled that wrong wan rule that you tell me, and today now, look: (in grey text color)

                            Status: Resolving address of ftp.datasus.gov.br
                            Status: Connecting to 189.28.143.164:21...
                            Status: Connection established, waiting for welcome message...
                            Status: Insecure server, it does not support FTP over TLS.
                            Status: Logged in
                            Status: Retrieving directory listing...
                            Status: Directory listing of "/" successful

                            ........How today works?............

                            owwwww!!

                            Thanks

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator
                              last edited by johnpoz

                              How it works today - because like I said there is NOTHING to do if your doing passive..

                              And you didn't show the detail log so can not see what the passive command was and or even if your doing active and the ftp helper package is doing the work for you.

                              So you have downstream networks. Then there should be NOTHING on your lan - it should just be a transit network.

                              edit: BTW these are normally never good news... What are you alerts/errors - looks like you have 3 of them.

                              0_1528661904915_errors.png

                              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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