How to Find Out List of All Open Ports in Linux

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Aaron Kili

Aaron Kili is a Linux and F.O.S.S enthusiast, an upcoming Linux SysAdmin, web developer, and currently a content creator for TecMint who loves working with computers and strongly believes in sharing knowledge.

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6 Responses

  1. Chris Pesoa says:

    Nice article, can I suggest using:

    # netstat -lntup
    OR
    # ss -lntup
    

    instead of:

    # netstat -lntu
    AND
    # ss -lntu
    

    The -p option will show the process/daemon/user/PID who opened the port.

    Again, nice article!

    Chris.

  2. Martins Almeida says:

    “a port is a logical entity which acts as a endpoint of communication to identify a given application or process on an Linux operating system”. A port does not identify any application or process as the same port can be used by different applications or processes. More correct would be to use the words “is associated with” or “used by” insted. Regards.

  3. krankes-kind says:

    I guess in most occasions it would be good to add -p to display also the process which is listening on the respective port

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