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    MS FTP on DMZ not working for WAN Access

    Scheduled Pinned Locked Moved NAT
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    • T
      timb0311
      last edited by

      Tried re-installing the latest build from scratch and reconfiguring.  Still doesn't work.

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      • S
        sullrich
        last edited by

        It works fine here, honestly…  Make sure your not using a proxy arp type interface.  Also refer to the faq entries in faq.pfsense.com pertaining to ftp.

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        • T
          timb0311
          last edited by

          @sullrich:

          It works fine here, honestly…   Make sure your not using a proxy arp type interface.  Also refer to the faq entries in faq.pfsense.com pertaining to ftp.

          How do I … "Make sure your not using a proxy arp type interface"?  I am not a big network guru, so I am not sure how to do this.  Thanks.

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          • S
            sullrich
            last edited by

            Proxy arp type entry for Virtual IP's.

            Also ensure that your helper is enabled on Interfaces -> WAN.

            Delete all firewall rules and nat rules pertaining to this connection and readd the ftp rules.  Leave the 2 rules intact.

            Ensure that both rules have correct values set.  I fixed a bug where it was not specifying the interface ip address correctly in one of the firewall rules that are automatically added.

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            • T
              timb0311
              last edited by

              Still can get working…

              Proxy arp type entry for Virtual IP's.
              Not using Virtual Ips.. only WAN Interface Ip

              Also ensure that your helper is enabled on Interfaces -> WAN.
              helper is enabled on WAN interface only

              Delete all firewall rules and nat rules pertaining to this connection and readd the ftp rules.  Leave the 2 rules intact.
              Deleted the ftp Nat/FW Rules and added back both Nat/FW Rules

              Ensure that both rules have correct values set.  I fixed a bug where it was not specifying the interface ip address correctly in one of the firewall rules that are automatically added.

              Nat Rule shows:
              WAN  TCP  21 (FTP)  10.0.x.180 (ext.: xx.xx.xx.16)  21 (FTP)  WAN –> FTP Server

              FW Rules show:

              TCP  *  *  10.0.x.180  21 (FTP)  *  NAT WAN --> FTP Server     
              TCP  *  *  [blank]  21 (FTP)  *  NAT WAN –> FTP Server

              Also:
              $ ps awux | grep pftpx
              proxy    633  0.0  0.2   656   412  ??  Ss    8:38PM   0:00.00 /usr/local/sbin/pftpx -f 10.0.x.180 -b xx.xx.xx.16 -c 21 -g 21
              proxy    775  0.0  0.2   656   444  ??  Ss    8:38PM   0:00.00 /usr/local/sbin/pftpx -c 8021 -g 8021 192.168.x.1

              $ pfctl -s rules | grep ftp
              anchor "ftpsesame/" all
              pass in quick on sis2 inet proto tcp from any to 127.0.0.1 port = ftp keep state label "FTP PROXY: Allow traffic to localhost"
              anchor "ftpproxy" all
              anchor "pftpx/              " all
              pass in quick on sis1 inet proto tcp from any to 127.0.0.1 port = ftp-proxy keep state label "FTP PROXY: Allow traffic to localhost"
              pass in quick on sis1 inet proto tcp from any to 127.0.0.1 port = ftp keep state label "FTP PROXY: Allow traffic to localhost"
              pass in quick on sis0 inet proto tcp from any port = ftp-data to (sis0) port > 49000 user = 62 flags S/SA keep state label "FTP PROXY: PASV mode data connection"
              pass in quick on sis0 inet proto tcp from any to 10.0.x.180 port = ftp keep state label "USER_RULE: NAT WAN --> FTP Server"
              pass in quick on sis0 proto tcp from any to any port = ftp flags S/SA keep state label "USER_RULE: NAT WAN --> FTP Server"

              Does this look correct?  Any ideas?  Thanks.

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              • S
                sullrich
                last edited by

                TCP  *  *  [blank]  21 (FTP)  *  NAT WAN –> FTP Server

                That is wrong.

                Please run:

                cat /etc/inc/filter.inc | grep Id

                From a shell and report back.

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                • S
                  sullrich
                  last edited by

                  Actually, I forgot to include the files in the upgrade.  ::)

                  Please upgrade.  Start from the last version you installed.

                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2a.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2b.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2c.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2d.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2e.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2f.sh | sh -
                  fetch -q -o - http://www.pfsense.com/~sullrich/update_to_rc2g.sh | sh -

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                  • T
                    timb0311
                    last edited by

                    Ok ran updates… then applied nat/rules, still not working... see below:

                    cat /etc/inc/filter.inc | grep Id
                    /* $Id: filter.inc,v 1.575.2.234 2006/08/23 20:19:18 sullrich Exp $ */

                    ps awux | grep pftpx
                    proxy    633  0.0  0.2   656   412  ??  Ss    8:38PM   0:00.00 /usr/local/sbin/pftpx -f 10.0.x.180 -b xx.xx.xx.16 -c 21 -g 21
                    proxy    775  0.0  0.2   656   444  ??  Ss    8:38PM   0:00.00 /usr/local/sbin/pftpx -c 8021 -g 8021 192.168.x.1

                    $ pfctl -s rules | grep ftp
                    anchor "ftpsesame/" all
                    pass in quick on sis2 inet proto tcp from any to 127.0.0.1 port = ftp keep state label "FTP PROXY: Allow traffic to localhost"
                    anchor "ftpproxy" all
                    anchor "pftpx/                    " all
                    pass in quick on sis1 inet proto tcp from any to 127.0.0.1 port = ftp-proxy keep state label "FTP PROXY: Allow traffic to localhost"
                    pass in quick on sis1 inet proto tcp from any to 127.0.0.1 port = ftp keep state label "FTP PROXY: Allow traffic to localhost"
                    pass in quick on sis0 inet proto tcp from any port = ftp-data to (sis0) port > 49000 user = 62 flags S/SA keep state label "FTP PROXY: PASV mode data connection"
                    pass in quick on sis0 inet proto tcp from any to 10.0.x.180 port = ftp keep state label "USER_RULE: NAT WAN --> FTP Server"
                    pass in quick on sis0 inet proto tcp from any to xx.xx.xx.16 port = ftp keep state label "USER_RULE: NAT WAN --> FTP Server"

                    Debug info from SmartFTP client:

                    [22:33:03] SmartFTP v2.0.997.4
                    [22:33:03] Resolving host name "ftp.mydomain.com"
                    [22:33:03] Connecting to xx.xx.xx.16 Port: 21
                    [22:33:03] Connected to ftp.mydomain.com.
                    [22:33:03] 220-Microsoft FTP Service
                    [22:33:04] 220 WARNING: You must have authorization to access this system. All connections are logged and monitored.
                    [22:33:04] USER myuser
                    [22:33:04] 331 Password required for myuser.
                    [22:33:04] PASS (hidden)
                    [22:33:04] 230 User myuser logged in.
                    [22:33:04] SYST
                    [22:33:06] 215 Windows_NT
                    [22:33:06] Detected Server Type: Windows NT
                    [22:33:06] FEAT
                    [22:33:06] 211-FEAT
                    [22:33:06]     SIZE
                    [22:33:06]     MDTM
                    [22:33:06] 211 END
                    [22:33:06] TYPE I
                    [22:33:06] 200 Type set to I.
                    [22:33:06] REST 0
                    [22:33:06] 350 Restarting at 0.
                    [22:33:06] PWD
                    [22:33:06] 257 "/" is current directory.
                    [22:33:06] TYPE A
                    [22:33:06] 200 Type set to A.
                    [22:33:06] PORT 10,0,x,180,12,203

                    [22:33:06] 500 Invalid PORT Command.        <–- Errors out here trying active mode... then switches to passive

                    [22:33:06] Automatic failover of data connection mode from "Active Mode (PORT)" to "Passive Mode (PASV)".

                    [22:33:06] PASV
                    [22:33:06] 227 Entering Passive Mode (10,0,x,180,191,108).
                    [22:33:06] Opening data connection to 10,0,x,180 Port: 49004

                    [22:33:06] LIST -aL                                   <–- Errors out here ... forces server to close connection

                    [22:33:06] 0 bytes transferred. (N/A/s) (0 ms)
                    [22:33:06] 426 Connection closed; transfer aborted.
                    [22:33:26] An established connection was aborted by the software in your host machine.
                    [22:33:26] Server closed connection

                    DEBUG from MS FTP command line:

                    ftp> debug
                    Debugging On .
                    ftp> open ftp.mydomain.com
                    Connected to ftp.mydomain.com.
                    220-Microsoft FTP Service
                    220 WARNING: You must have authorization to access….
                    User (ftp.mydomaind.com:(none)): myuser
                    ---> USER myuser
                    331 Password required for myuser.
                    Password:
                    ---> PASS mypwd
                    230 User myuser logged in.
                    ftp> dir
                    ---> PORT 10,0,x,180,13,3
                    500 Invalid PORT Command.
                    ---> LIST
                    150 Opening ASCII mode data connection for /bin/ls.         <--- command line freezes here...

                    Both test scenarios the server shows logged in, but neither will let you run commands.  Can't list directory, Can't push data to server... nor pull data from server.  Which tells me there is something wrong with the passive ports across the firewall.  I can't even do it across the LAN anymore while the nat/firewall rules in place.

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                    • S
                      sullrich
                      last edited by

                      Please show the firewall rules summary view that you showed before that contained the "blank" entry

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                      • T
                        timb0311
                        last edited by

                        Current Firewall rules after patches:

                        TCP  *  *  10.0.x.180 21 (FTP)  *  NAT WAN –> FTP Server     
                        TCP  *  *  WAN address  21 (FTP)  *  NAT WAN --> FTP Server

                        I just tried removing the NAT Port forward... thinking that it makes no sense since the proxy would be doing the forwarding.  Is this a correct assumption?

                        Anywaym after that I could LIST the directory information from  the LAN now.

                        Still need to test from outside... have to get someone to test this for me.

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                        • T
                          timb0311
                          last edited by

                          Ok tested externally and all is working after the NAT rule is deleted!  Thanks.

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