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Guide to the Secure Configuration of Debian 12

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Restrict unprivileged access to the kernel syslog

    Enforce restrictions on unprivileged users reading the kernel syslog via dmesg(8). The configuration that was used to build kernel is available at...
    Rule Medium Severity
  • Disable mutable hooks

    Ensure kernel structures associated with LSMs are always mapped as read-only after system boot. The configuration that was used to build kernel is...
    Rule Medium Severity
  • Enable Yama support

    This enables support for LSM module Yama, which extends DAC support with additional system-wide security settings beyond regular Linux discretionar...
    Rule Medium Severity
  • Enable SLUB debugging support

    SLUB has extensive debug support features and this allows the allocator validation checking to be enabled. The configuration that was used to buil...
    Rule Medium Severity
  • Configure OpenSSH Server if Necessary

    If the system needs to act as an SSH server, then certain changes should be made to the OpenSSH daemon configuration file <code>/etc/ssh/sshd_confi...
    Group
  • SSH RekeyLimit - size

    Specify the size component of the rekey limit.
    Value
  • SSH RekeyLimit - size

    Specify the size component of the rekey limit.
    Value
  • SSH Compression Setting

    Specify the compression setting for SSH connections.
    Value
  • SSH Privilege Separation Setting

    Specify whether and how sshd separates privileges when handling incoming network connections.
    Value
  • SSH LoginGraceTime setting

    Configure parameters for how long the servers stays connected before the user has successfully logged in
    Value

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