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Guide to the Secure Configuration of Ubuntu 20.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Install the opensc Package For Multifactor Authentication

    The opensc-pkcs11 package can be installed with the following command: 
    $ apt-get install opensc-pkcs11
    Rule Medium Severity
    Show

  • Install Smart Card Packages For Multifactor Authentication

    Configure the operating system to implement multifactor authentication by installing the required package with the following command: The <code>libpam-pkcs11</code> package can be installed with t...
    Rule Medium Severity
    Show

  • Configure Smart Card Certificate Authority Validation

    Configure the operating system to do certificate status checking for PKI authentication. Modify all of the <code>cert_policy</code> lines in <code>/etc/pam_pkcs11/pam_pkcs11.conf</code> to include ...
    Rule Medium Severity
    Show

  • Configure Smart Card Local Cache of Revocation Data

    Configure the operating system for PKI-based authentication to use local revocation data when unable to access the network to obtain it remotely. Modify all of the <code>cert_policy</code> lines in...
    Rule Medium Severity
    Show

  • Verify that 'use_mappers' is set to 'pwent' in PAM

    The operating system must map the authenticated identity to the user or group account for PKI-based authentication. Verify that <code>use_mappers</code> is set to <code>pwent</code> in <code>/etc/...
    Rule Low Severity
    Show

  • Protect Accounts by Restricting Password-Based Login

    Conventionally, Unix shell accounts are accessed by providing a username and password to a login program, which tests these values for correctness using the <code>/etc/passwd</code> and <code>/etc/...
    Group
    Show

  • Ensure All Accounts on the System Have Unique User IDs

    Change user IDs (UIDs), or delete accounts, so each has a unique name.
    Rule Medium Severity
    Show

  • Ensure All Groups on the System Have Unique Group ID

    Change the group name or delete groups, so each has a unique id.
    Rule Medium Severity
    Show

  • Ensure All Groups on the System Have Unique Group Names

    Change the group name or delete groups, so each has a unique name.
    Rule Medium Severity
    Show

  • number of days after a password expires until the account is permanently disabled

    The number of days to wait after a password expires, until the account will be permanently disabled.
    Value
    Show

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