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SOLVED How to force user to use SFTP and Secure SMTP?

Discussion in 'Security' started by sodapopinski, Oct 14, 2017.

  1. sodapopinski

    sodapopinski Well-Known Member

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    Hi All,

    Long time I never touch and read update about the cpanel server since resigned into hosting company on 2012.
    Now my friend want me to manage his server because too many ftp account hacked through trojan horse in customer computer.

    My questions are :

    1. How to force customer using SFTP instead of using FTP. Do we need to turn on shell access?
    2. How to force user to download and send email using secure encrypted way?

    Thank you very much.
     
    #1 sodapopinski, Oct 14, 2017
  2. Jcats

    Jcats Well-Known Member

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    You can disable the FTP service via WHM > Service Manager

    And then yes, you would need to enable shell access.

    Too be honest though, this will increase the hackers ability to do even more damage if they are able to get the SFTP info from a trojan since they now have shell access where FTP will limit their abilities.

    In WHM > Mailserver Configuration

    Set Allow Plaintext Authentication to NO

    WHM > Exim Configuration Manager

    Require clients to connect with SSL or issue the STARTTLS command before they are allowed to authenticate with the server. - On
     
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    #2 Jcats, Oct 14, 2017
  3. cPWilliamL

    cPWilliamL cP Technical Analyst II Staff Member

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    Hi @sodapopinski @Jcats,

    Just to be clear, SFTP access for a cPanel user doesn't require shell access when disabled via WHM. When the shell is disabled from WHM, a special shell wrapper(/usr/local/cpanel/bin/noshell) is used to allow SFTP access, without allowing full shell access. With that said, this wrapper doesn't support any custom arguments added to the SFTP subsystem configuration.

    The rest of the recommendations are certainly correct though.

    Thanks,
     
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    #3 cPWilliamL, Oct 16, 2017
    Infopro likes this.
  4. sodapopinski

    sodapopinski Well-Known Member

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    #4 sodapopinski, Oct 17, 2017
  5. cPWilliamL

    cPWilliamL cP Technical Analyst II Staff Member

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    Glad to help. I'll mark this thread as solved for now.
     
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    #5 cPWilliamL, Oct 17, 2017
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