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Guide to the Secure Configuration of Debian 10

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Disable SSH TCP Forwarding

    The <code>AllowTcpForwarding</code> parameter specifies whether TCP forwarding is permitted. To disable TCP forwarding, add or correct the followin...
    Rule Medium Severity
  • Disable SSH Support for User Known Hosts

    SSH can allow system users to connect to systems if a cache of the remote systems public keys is available. This should be disabled. <br><br> To e...
    Rule Medium Severity
  • Disable X11 Forwarding

    The X11Forwarding parameter provides the ability to tunnel X11 traffic through the connection to enable remote graphic connections. SSH has the cap...
    Rule Medium Severity
  • Do Not Allow SSH Environment Options

    Ensure that users are not able to override environment variables of the SSH daemon. <br> The default SSH configuration disables environment process...
    Rule Medium Severity
  • Enable GSSAPI Authentication

    Sites setup to use Kerberos or other GSSAPI Authenticaion require setting sshd to accept this authentication. To enable GSSAPI authentication, add ...
    Rule Medium Severity
  • Enable PAM

    UsePAM Enables the Pluggable Authentication Module interface. If set to “yes” this will enable PAM authentication using ChallengeResponseAuthentica...
    Rule Medium Severity
  • SSSD memcache_timeout option

    Value of the memcache_timeout option in the [nss] section of SSSD config /etc/sssd/sssd.conf.
    Value
  • SSSD ssh_known_hosts_timeout option

    Value of the ssh_known_hosts_timeout option in the [ssh] section of SSSD configuration file /etc/sssd/sssd.conf.
    Value
  • Enable Public Key Authentication

    Enable SSH login with public keys. <br> The default SSH configuration enables authentication based on public keys. The appropriate configuration is...
    Rule Medium Severity
  • Enable Use of Strict Mode Checking

    SSHs <code>StrictModes</code> option checks file and ownership permissions in the user's home directory <code>.ssh</code> folder before accepting l...
    Rule Medium Severity

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