Restricting FTP data connection port range?

From: Robert Miller (rmiller_at_SMUD.ORG)
Date: 11/10/05

  • Next message: Lamar Saxon: "Re: Restricting FTP data connection port range?" 
    Date:         Thu, 10 Nov 2005 08:44:43 -0800
To: aix-l@Princeton.EDU

    Folks,

    We've been having an odd problem connecting to an FTP server, and they have asked that I restrict the FTP data ports from the client end (our end).

    Specifically, we're getting "425 Can't open data connection" errors intermittently, and the only thing that seems to be consistent is that the problem occurs when port 65535 is used.

    Does anyone know a way of restricting FTP data traffic to specific ports with the regular, vanilla FTP client? We're using AIX 5.2 ML2.

    I have briefly looked at the "no" command, and it looks like it might be useful, but I'm wondering what other effects restricting the available ports might have.

    Hopefully someone has already had to do this and knows the right bits to twiddle :)

    --rm

  • Next message: Lamar Saxon: "Re: Restricting FTP data connection port range?"

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