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Thread: Cisco 667

  1. #1

    Question Cisco 667

    Hello guys.

    I have a Cisco 667 router and I am trying to run the FTP server on a different port than 21.

    If I let the port on 21 and I set the NAT to redirect all the traffic from 21 (external IP ) to the port 21 on one of the internal IP's all is ok and working fine.

    As soon as I change the port like 2323 external , 2323 Internal the clients can connect but at listing the directoryes they get a timeout message.
    Port 20 redirected also.

    Any ideea how to solve the problem ?

  2. #2
    Advanced Member C.M. Weaver's Avatar
    Join Date
    Oct 2000
    Littleton, CO
    Port 20 is the port used to transfer the data and port 21 is used to control the connection. When using a different port you want to also set the control port one number below the data port as long as it is higher than the well known port range of 1-1024.

    So in your example of your FTP you would port forward 2322-2323.


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