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Allowing passive ftp - Mac Networking

Running an ftp server with NetPresenz 4.1, the 10$ one (!), and OS 8.6. Passive mode data connections are blocked by the firewall. On what port range does NetPresenz "listen" to such data connections? Mind you, definitely don't mean port 20 (21 even less) but the range (> 1024) from within which it picks one to have the client connect to for data transport. So I may set the firewall to allow 'm. Searched the manual, the web and news groups, all to no avail. -- regards, Mar|c|e|l | mailto://larcener"for"xs4all"of"netherlands -----------------------------------------------...

  1. #1

    Default Allowing passive ftp


    Running an ftp server with NetPresenz 4.1, the 10$ one (!), and OS 8.6.
    Passive mode data connections are blocked by the firewall.

    On what port range does NetPresenz "listen" to such data connections? Mind
    you, definitely don't mean port 20 (21 even less) but the range (> 1024)
    from within which it picks one to have the client connect to for data
    transport. So I may set the firewall to allow 'm.

    Searched the manual, the web and news groups, all to no avail.

    --
    regards,
    Mar|c|e|l |
    mailto://larcener"for"xs4all"of"netherlands
    -----------------------------------------------


    Marcel Guest

  2. #2

    Default Re: Allowing passive ftp

    On 16 Feb 2004 16:48:01 +0100,
    Marcel Vermeulen (invalid) wrote: 

    I guess you aren't using a stateful firewall? Too bad. Why don't you
    contact Stairways Software and ask them what port range NetPresenz uses
    for passive transfers?

    --
    Bev A. Kupf
    "The lyfe so short, the craft so long to lerne" -- Chaucer
    Tintin turns 75 <http://www.tintin.com>
    Bev Guest

  3. #3

    Default Re: Allowing passive ftp

    In article <109.236.3>,
    "Marcel Vermeulen" <invalid> wrote:
     

    Port 20 is the standard port for the data channel. If it's not using
    that, it's letting the OS choose _any_ high numbered port that's open.
    You'll have to configure NetPresenz to use a specific port.
    Kevin Guest

  4. #4

    Default Re: Allowing passive ftp

    In article <supernews.com>,
    Kevin McMurtrie <com> wrote:
     
    >
    > Port 20 is the standard port for the data channel. If it's not using
    > that, it's letting the OS choose _any_ high numbered port that's open.
    > You'll have to configure NetPresenz to use a specific port.[/ref]

    Port 20 is supposed to be used for active mode data channels, but
    passive mode is expected to use an ephemeral port. You need to
    configure the firewall to allow ports > 32767.

    --
    Barry Margolin, mit.edu
    Arlington, MA
    *** PLEASE post questions in newsgroups, not directly to me ***
    Barry Guest

  5. #5

    Default Re: Allowing passive ftp

    On Mon, Feb 16, 2004 23:11, Barry Margolin <mailto:mit.edu>
    wrote: 
    >>
    >> Port 20 is the standard port for the data channel. If it's not
    >> using that, it's letting the OS choose _any_ high numbered port
    >> that's open.
    >> You'll have to configure NetPresenz to use a specific port.[/ref][/ref]

    No such settings there, or to be expected for a mere $ 10.
     

    Port 2048 upward actually. Seems Kevin is right at least in that NetPresenz
    has the system decide, or so I was told meanwhile.

    The one simple thing to do was to ftp the server, several restarts in
    between, and watch the PASV lines. Courtesy Stairway's patient Peter Lewis
    (!) while I should 've thought of that myself of course.

    Time will tell how big a hole in the firewall NetPresenz will settle for.

    cheers,
    --
    regards,
    Mar|c|e|l |
    mailto://larcener"for"xs4all"of"netherlands
    -----------------------------------------------


    Marcel Guest

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