FTP IP Filtering

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From: Scott King (King_at_discussions.microsoft.com)
Date: 10/22/04

  • Next message: frank: "directories that cannot delete" 
    Date: Fri, 22 Oct 2004 15:23:01 -0700

    I have a client who needed to send me some large files and e-mail wasn't an
    option, so I set up a quick and dirty FTP site hosted on a Windows 2000
    Server box using IIS 5.0. The client has multiple proxy servers that are
    selected via a balancing mechanism, so I started by initially denying access
    in the Directory Security tab to all IPs and added the various IPs of these
    proxy servers to the allow access list. In general, this worked, however,
    with one specific IP address, the client keeps getting a "530 Connection
    refused, unknown IP address" returned.

    I turned on a network sniffer to make sure the request was getting by my
    outer firewall and that the 503 message was being returned by the FTP server
    and sure enough it was. I can't see any difference in the way that this
    filter is set up from the other ones that seem to work. I've tried allowing
    access to a group (block) of addresses without success. I've tried removing
    and readding the IP address. I've even gone to the extent of allowing access
    to all Ips and still get the 503 for the one specific IP address.

    Does anyone have an idea why the connection would be refused for this one IP
    address and not the others?

    Thanks,
    Scott

  • Next message: frank: "directories that cannot delete"

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