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CIS Amazon Linux 2023 Benchmark for Level 2 - Server

Rules and Groups employed by this XCCDF Profile

  • Enable systemd-journald Service

    The <code>systemd-journald</code> service is an essential component of systemd. The <code>systemd-journald</code> service can be enabled with the following command: <pre>$ sudo systemctl enable sy...
    Rule Medium Severity
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  • Ensure journald is configured to compress large log files

    The journald system can compress large log files to avoid fill the system disk.
    Rule Medium Severity
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  • Ensure journald is configured to send logs to rsyslog

    Data from journald may be stored in volatile memory or persisted locally. Utilities exist to accept remote export of journald logs.
    Rule Medium Severity
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  • Ensure journald is configured to write log files to persistent disk

    The journald system may store log files in volatile memory or locally on disk. If the logs are only stored in volatile memory they will we lost upon reboot.
    Rule Medium Severity
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  • Disable systemd-journal-remote Socket

    Journald supports the ability to receive messages from remote hosts, thus acting as a log server. Clients should not receive data from other hosts. NOTE: The same package, systemd-journal-remot...
    Rule Medium Severity
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  • Configure rsyslogd to Accept Remote Messages If Acting as a Log Server

    By default, <code>rsyslog</code> does not listen over the network for log messages. If needed, modules can be enabled to allow the rsyslog daemon to receive messages from other systems and for the ...
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  • Ensure rsyslog Does Not Accept Remote Messages Unless Acting As Log Server

    The <code>rsyslog</code> daemon should not accept remote messages unless the system acts as a log server. To ensure that it is not listening on the network, ensure any of the following lines are <i...
    Rule Medium Severity
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  • Rsyslog Logs Sent To Remote Host

    If system logs are to be useful in detecting malicious activities, it is necessary to send logs to a remote server. An intruder who has compromised the root account on a system may delete the log e...
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  • Ensure Logs Sent To Remote Host

    To configure rsyslog to send logs to a remote log server, open <code>/etc/rsyslog.conf</code> and read and understand the last section of the file, which describes the multiple directives necessary...
    Rule Medium Severity
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  • Network Configuration and Firewalls

    Most systems must be connected to a network of some sort, and this brings with it the substantial risk of network attack. This section discusses the security impact of decisions about networking wh...
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  • firewalld

    The dynamic firewall daemon <code>firewalld</code> provides a dynamically managed firewall with support for network “zones” to assign a level of trust to a network and its associated connections an...
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  • Inspect and Activate Default firewalld Rules

    Firewalls can be used to separate networks into different zones based on the level of trust the user has decided to place on the devices and traffic within that network. <code>NetworkManager</code>...
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  • Install firewalld Package

    The firewalld package can be installed with the following command: 
    $ sudo dnf install firewalld
    Rule Medium Severity
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  • Verify firewalld Enabled

    The firewalld service can be enabled with the following command: 
    $ sudo systemctl enable firewalld.service
    Rule Medium Severity
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  • Strengthen the Default Ruleset

    The default rules can be strengthened. The system scripts that activate the firewall rules expect them to be defined in configuration files under the <code>/etc/firewalld/services</code> and <code>...
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  • Configure Firewalld to Restrict Loopback Traffic

    Configure <code>firewalld</code> to restrict loopback traffic to the <code>lo</code> interface. The loopback traffic must be trusted by assigning the <code>lo</code> interface to the <code>firewal...
    Rule Medium Severity
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  • Configure Firewalld to Trust Loopback Traffic

    Assign loopback interface to the <code>firewalld</code> <code>trusted</code> zone in order to explicitly allow the loopback traffic in the system. To configure <code>firewalld</code> to t...
    Rule Medium Severity
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  • Set Default firewalld Zone for Incoming Packets

    To set the default zone to <code>drop</code> for the built-in default zone which processes incoming IPv4 and IPv6 packets, modify the following line in <code>/etc/firewalld/firewalld.conf</code> to...
    Rule Medium Severity
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  • IPv6

    The system includes support for Internet Protocol version 6. A major and often-mentioned improvement over IPv4 is its enormous increase in the number of available addresses. Another important featu...
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  • Configure IPv6 Settings if Necessary

    A major feature of IPv6 is the extent to which systems implementing it can automatically configure their networking devices using information from the network. From a security perspective, manually...
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Node 2

siemur/test-space

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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