port 143: connect and test

Posted on 2014-08-22
Last Modified: 2014-10-23
I want to connect to windows server 2008 using port 143

how can I open this port using windows 7

and how can I see the connection was successful by testing.
Question by:rgb192
    LVL 14

    Expert Comment

    by:Brad Groux
    TCP port 143 is designated for usage with Internet Message Access Protocol (IMAP), hopefully that is your intent.

    With that said, make sure that Windows Firewall on both the server and the desktop allow for traffic over port 143. Info on how to do so can be found here -

    To test that you can connect to port 143, use telnet to connect from the Windows 7 machine to the 2008 server. If the telnet connection succeeds, then connectivity is working.

    1. Open a command prompt on Windows 7 desktop
    2. In the command prompt type: telnet Windows2008ServerName 143
    3. Hit enter
    4. If you are prompted for a username and password, connectivity is working

    Open in new window

    NOTE: You may need to add the telnet feature to Windows if it isn't installed.
    LVL 1

    Accepted Solution

    If telnet client is not installed, you can use putty -
    and then change the connection options as per my screenshot

    Author Comment

    using putty:
    telnet disappears in seconds

    but I use ssh 143 and there is a connection

    Author Comment

    So is connecting via ssh proof that port 143 is working?
    Or must I install telnet?

    Author Comment

    Is telnet required?

    Author Closing Comment


    I think this would work.

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