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The Problem with Passive Mode ftp server - Linux Setup, Configuration & Administration

"Alan Po" <alanalanpro.com> wrote in message news:bfjkgk$q3v$1hfc.pacific.net.hk... | Dear all | | I have set up a ftp server by using Proftp. Since I am using a router to | connect to the Internet with an ADSL modem, I have turn on the Passive Port | of the ftp server and use the port forwarding in my router. Unfortunately, | it fail! I have tried to connect to the ftp within my local network and it | work. I also make sure that my setting on the router is OK because I am | curretly using SERV-U (also turn on ...

  1. #1

    Default Re: The Problem with Passive Mode ftp server



    "Alan Po" <alanalanpro.com> wrote in message
    news:bfjkgk$q3v$1hfc.pacific.net.hk...
    | Dear all
    |
    | I have set up a ftp server by using Proftp. Since I am using a router to
    | connect to the Internet with an ADSL modem, I have turn on the Passive
    Port
    | of the ftp server and use the port forwarding in my router. Unfortunately,
    | it fail! I have tried to connect to the ftp within my local network and it
    | work. I also make sure that my setting on the router is OK because I am
    | curretly using SERV-U (also turn on the passive mode) and everything is
    ok.
    | Furthermore, the login screen on the ftpclient show that my router can
    | locate (port forward) to a correct server but fail to establish a data
    | channel.
    |
    | Anyone can give me some idea or solution? Please help since I really want
    to
    | build a Linux environment to replace any M$ server in my network.
    |
    | Thanks a lot
    |
    | Alan Po
    |
    | [email]alanalanpro.com[/email]
    |
    |

    I do not believe you can use passive when using NAT. Switch to PORT.

    ken k


    Ken Kauffman Guest

  2. #2

    Default Re: The Problem with Passive Mode ftp server


    "Ken Kauffman" <kkauffmannospam.headfog.com> wrote in message
    news:XPdTa.16704$zd4.10176lakeread02...
    |
    |
    | "Alan Po" <alanalanpro.com> wrote in message
    | news:bfjkgk$q3v$1hfc.pacific.net.hk...
    | | Dear all
    | |
    | | I have set up a ftp server by using Proftp. Since I am using a router to
    | | connect to the Internet with an ADSL modem, I have turn on the Passive
    | Port
    | | of the ftp server and use the port forwarding in my router.
    Unfortunately,
    | | it fail! I have tried to connect to the ftp within my local network and
    it
    | | work. I also make sure that my setting on the router is OK because I am
    | | curretly using SERV-U (also turn on the passive mode) and everything is
    | ok.
    | | Furthermore, the login screen on the ftpclient show that my router can
    | | locate (port forward) to a correct server but fail to establish a data
    | | channel.
    | |
    | | Anyone can give me some idea or solution? Please help since I really
    want
    | to
    | | build a Linux environment to replace any M$ server in my network.
    | |
    | | Thanks a lot
    | |
    | | Alan Po
    | |
    | | [email]alanalanpro.com[/email]
    | |
    | |
    |
    | I do not believe you can use passive when using NAT. Switch to PORT.
    |
    | ken k

    Are you definitely connecting to SERV-U in passive mode? or does your
    client negotiate for supported protocol? (ncftp will do this). Also, don't
    forget to port forward port 20 as well as 21.

    ken k


    Ken Kauffman Guest

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