FTP connection not possible

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This topic contains 13 replies, has 3 voices, and was last updated by Avatar Svenster 11 years, 10 months ago.

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    Svenster
    Member
    #130202

    FTP works on the gateway-server but not on other servers and cliënts. What can be the problem??

    Svenster….

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    m80arm
    Member
    #233430

    Re: FTP connection not possible

    Svenster,

    After 22 posts you should know that we require more information before we can help you.

    What version of windows are your running?
    Are you using IIS?
    Do you have any routers?
    Is port 21 forwarded to the correct server?

    the more info you supply the quicker we can help you

    Michael

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    Svenster
    Member
    #313156

    Re: FTP connection not possible

    Michael,

    Sorry you’re right…
    I’m running Windows 2003 standard. The gateway server is a SBS2003 server.
    I do use IIS for publishing the company’s website and OWA.

    I just finished moving my SBS server from old hardware to new hardware. Before that FTP was working from every computer or server in the network. Currently I have no firewall or routers configured in the network.

    ISP Modem > Gateway server > Network

    That is how the network looks like at the moment….

    Avatar
    m80arm
    Member
    #233431

    Re: FTP connection not possible

    Moved to the SBS forum.

    try to telnet to your SBS server and see if port 21 is open i.e.

    Quote:
    telnet 21

    the FTP service should respond.

    Avatar
    Svenster
    Member
    #313157

    Re: FTP connection not possible

    Telnet to the SBSserver does work. FTP on this server is not the problem, it works. The problem are the servers and workstions behind the gateway server. From there its not possible.

    Avatar
    m80arm
    Member
    #233433

    Re: FTP connection not possible

    So your saying that you can FTP to the server from an external address but you cannot telnet to the server from an internal address?

    Avatar
    Svenster
    Member
    #313158

    Re: FTP connection not possible

    FTP from and to the SBS server (gateway) is possible.

    FTP from and to the other server and all workstations in the network is not possible.

    Svenster

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    m80arm
    Member
    #233434

    Re: FTP connection not possible

    Why would you want to FTP from a server to your workstation? Why dont you just FTP from your workstation to your server and bring the files down?

    Sorry if I’m misunderstanding your questions

    Michael

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    Svenster
    Member
    #313159

    Re: FTP connection not possible

    On 1 of my servers we use some database software from some company. This software can automaticly send error report to that company via FTP. The FTP connection is somehow blocked.

    To locate the problem I tried to connect to http://ftp.microsoft.com from this server. This doesn’t work either.

    Next I tried to connect to http://ftp.microsoft.com on my gateway server (This happens to be a SBS2003 server). This does work!!

    Conclusion: FTP does only work on my gateway server and not on any other computer or server in the network….

    Hope I discribed the problem more clearly now ;)!

    Greetz Svenster

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    Dumber
    Participant
    #197156

    Re: FTP connection not possible

    So if I understand you correctly you’ve the following situation (I’m a bit lost)

    Connecting to the FTP service on the localhost gaves no issues.
    Connecting from an internal client gives you issues (you cant connect)

    Ok on which ip address is the FTP service connected?

    Can you run the following command on the FTP server and post the output here?
    Netstat -an | find “21”[/CODE][CODE]Netstat -an | find “21”[/CODE]

    Avatar
    Svenster
    Member
    #313160

    Re: FTP connection not possible

    This is the output of the command:

    TCP 0.0.0.0:21 0.0.0.0:0 LISTENING
    TCP 0.0.0.0:1216 0.0.0.0:0 LISTENING
    TCP 10.0.0.54:25 212.203.12.18:50096 TIME_WAIT
    TCP 10.0.0.54:443 212.78.163.78:20431 ESTABLISHED
    TCP 10.0.0.54:43742 216.49.88.13:80 TIME_WAIT
    TCP 10.0.0.54:43745 216.49.88.13:80 TIME_WAIT
    TCP 10.0.0.54:43746 216.49.88.13:80 TIME_WAIT
    TCP 192.168.0.11:389 192.168.0.11:35921 ESTABLISHED
    TCP 192.168.0.11:1026 192.168.0.11:12167 ESTABLISHED
    TCP 192.168.0.11:3268 192.168.0.11:42122 ESTABLISHED
    TCP 192.168.0.11:12167 192.168.0.11:1026 ESTABLISHED
    TCP 192.168.0.11:35921 192.168.0.11:389 ESTABLISHED
    TCP 192.168.0.11:42122 192.168.0.11:3268 ESTABLISHED
    UDP 127.0.0.1:1217 *:*
    UDP 127.0.0.1:1321 *:*

    The 10.0.0.54 is the outside adres of the gateway-server. It’s directly connected to the ISP-modem. 192.168.0.11 is the inside adres…

    Avatar
    Dumber
    Participant
    #197158

    Re: FTP connection not possible

    this is the one where i was interessted in:

    TCP 0.0.0.0:21 0.0.0.0:0 LISTENING

    do you have a firewall on the machine?
    Can you fix the ip address on the FTP service on the internal IP?

    Avatar
    Svenster
    Member
    #313161

    Re: FTP connection not possible

    How can I do that?

    Avatar
    Dumber
    Participant
    #197161

    Re: FTP connection not possible

    http://www.windowsnetworking.com/articles_tutorials/Creating-Configuring-FTP.html

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