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Guide to the Secure Configuration of Debian 11

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Rlogin, Rsh, and Rexec

    The Berkeley r-commands are legacy services which allow cleartext remote access and have an insecure trust model.
    Group
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  • Remove Rsh Trust Files

    The files <code>/etc/hosts.equiv</code> and <code>~/.rhosts</code> (in each user's home directory) list remote hosts and users that are trusted by the local system when using the rshd daemon. To re...
    Rule High Severity
    Show

  • SNMP Server

    The Simple Network Management Protocol allows administrators to monitor the state of network devices, including computers. Older versions of SNMP were well-known for weak security, such as plaintex...
    Group
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  • Disable SNMP Server if Possible

    The system includes an SNMP daemon that allows for its remote monitoring, though it not installed by default. If it was installed and activated but is not needed, the software should be disabled an...
    Group
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  • Disable snmpd Service

    The snmpd service can be disabled with the following command: 
    $ sudo systemctl mask --now snmpd.service
    Rule Low Severity
    Show

  • Verify Group Ownership on SSH Server Private *_key Key Files

    SSH server private keys, files that match the /etc/ssh/*_key glob, must be group-owned by root group.
    Rule Medium Severity
    Show

  • SNMP read-only community string

    Specify the SNMP community string used for read-only access.
    Value
    Show

  • SNMP read-write community string

    Specify the SNMP community string used for read-write access.
    Value
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  • Ensure Default SNMP Password Is Not Used

    Edit <code>/etc/snmp/snmpd.conf</code>, remove or change the default community strings of <code>public</code> and <code>private</code>. This profile configures new read-only community string to <co...
    Rule High Severity
    Show

  • SSH Server

    The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between two systems, as well as server authentication, throu...
    Group
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  • SSH session Idle time

    Specify duration of allowed idle time.
    Value
    Show

  • SSH Max authentication attempts

    Specify the maximum number of authentication attempts per connection.
    Value
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  • SSH is required to be installed

    Specify if the Policy requires SSH to be installed. Used by SSH Rules to determine if SSH should be uninstalled or configured.<br> A value of 0 means that the policy doesn't care if OpenSSH server ...
    Value
    Show

  • SSH Max Sessions Count

    Specify the maximum number of open sessions permitted.
    Value
    Show

  • SSH Max Keep Alive Count

    Specify the maximum number of idle message counts before session is terminated.
    Value
    Show

  • Install the OpenSSH Server Package

    The openssh-server package should be installed. The openssh-server package can be installed with the following command: 
    $ apt-get install openssh-server
    Rule Medium Severity
    Show

  • Remove the OpenSSH Server Package

    The openssh-server package should be removed. The openssh-server package can be removed with the following command: 
    $ apt-get remove openssh-server
    Rule Medium Severity
    Show

  • Verify Group Ownership on SSH Server Public *.pub Key Files

    SSH server public keys, files that match the /etc/ssh/*.pub glob, must be group-owned by root group.
    Rule Medium Severity
    Show

  • Verify Ownership on SSH Server Private *_key Key Files

    SSH server private keys, files that match the /etc/ssh/*_key glob, must be owned by root user.
    Rule Medium Severity
    Show

  • Verify Ownership on SSH Server Public *.pub Key Files

    SSH server public keys, files that match the /etc/ssh/*.pub glob, must be owned by root user.
    Rule Medium Severity
    Show

Node 2

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The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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